1 /* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2017 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the
19 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 Boston, MA 02110-1301, USA. */
23 /* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
35 #include "elf32-ppc.h"
36 #include "elf-vxworks.h"
38 #include "opcode/ppc.h"
40 typedef enum split16_format_type
47 /* RELA relocations are used here. */
49 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
51 static bfd_reloc_status_type ppc_elf_unhandled_reloc
52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
54 /* Branch prediction bit for branch taken relocs. */
55 #define BRANCH_PREDICT_BIT 0x200000
56 /* Mask to set RA in memory instructions. */
57 #define RA_REGISTER_MASK 0x001f0000
58 /* Value to shift register by to insert RA. */
59 #define RA_REGISTER_SHIFT 16
61 /* The name of the dynamic interpreter. This is put in the .interp
63 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
65 /* For old-style PLT. */
66 /* The number of single-slot PLT entries (the rest use two slots). */
67 #define PLT_NUM_SINGLE_ENTRIES 8192
69 /* For new-style .glink and .plt. */
70 #define GLINK_PLTRESOLVE 16*4
71 #define GLINK_ENTRY_SIZE 4*4
72 #define TLS_GET_ADDR_GLINK_SIZE 12*4
74 /* VxWorks uses its own plt layout, filled in by the static linker. */
76 /* The standard VxWorks PLT entry. */
77 #define VXWORKS_PLT_ENTRY_SIZE 32
78 static const bfd_vma ppc_elf_vxworks_plt_entry
79 [VXWORKS_PLT_ENTRY_SIZE / 4] =
81 0x3d800000, /* lis r12,0 */
82 0x818c0000, /* lwz r12,0(r12) */
83 0x7d8903a6, /* mtctr r12 */
84 0x4e800420, /* bctr */
85 0x39600000, /* li r11,0 */
86 0x48000000, /* b 14 <.PLT0resolve+0x4> */
90 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
91 [VXWORKS_PLT_ENTRY_SIZE / 4] =
93 0x3d9e0000, /* addis r12,r30,0 */
94 0x818c0000, /* lwz r12,0(r12) */
95 0x7d8903a6, /* mtctr r12 */
96 0x4e800420, /* bctr */
97 0x39600000, /* li r11,0 */
98 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
100 0x60000000, /* nop */
103 /* The initial VxWorks PLT entry. */
104 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
105 static const bfd_vma ppc_elf_vxworks_plt0_entry
106 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
108 0x3d800000, /* lis r12,0 */
109 0x398c0000, /* addi r12,r12,0 */
110 0x800c0008, /* lwz r0,8(r12) */
111 0x7c0903a6, /* mtctr r0 */
112 0x818c0004, /* lwz r12,4(r12) */
113 0x4e800420, /* bctr */
114 0x60000000, /* nop */
115 0x60000000, /* nop */
117 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
118 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
120 0x819e0008, /* lwz r12,8(r30) */
121 0x7d8903a6, /* mtctr r12 */
122 0x819e0004, /* lwz r12,4(r30) */
123 0x4e800420, /* bctr */
124 0x60000000, /* nop */
125 0x60000000, /* nop */
126 0x60000000, /* nop */
127 0x60000000, /* nop */
130 /* For executables, we have some additional relocations in
131 .rela.plt.unloaded, for the kernel loader. */
133 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
134 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
135 /* The number of relocations in the PLTResolve slot. */
136 #define VXWORKS_PLTRESOLVE_RELOCS 2
137 /* The number of relocations in the PLTResolve slot when creating
139 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
141 /* Some instructions. */
142 #define ADDIS_11_11 0x3d6b0000
143 #define ADDIS_11_30 0x3d7e0000
144 #define ADDIS_12_12 0x3d8c0000
145 #define ADDI_11_11 0x396b0000
146 #define ADD_0_11_11 0x7c0b5a14
147 #define ADD_3_12_2 0x7c6c1214
148 #define ADD_11_0_11 0x7d605a14
150 #define BA 0x48000002
151 #define BCL_20_31 0x429f0005
152 #define BCTR 0x4e800420
153 #define BEQLR 0x4d820020
154 #define CMPWI_11_0 0x2c0b0000
155 #define LIS_11 0x3d600000
156 #define LIS_12 0x3d800000
157 #define LWZU_0_12 0x840c0000
158 #define LWZ_0_12 0x800c0000
159 #define LWZ_11_3 0x81630000
160 #define LWZ_11_11 0x816b0000
161 #define LWZ_11_30 0x817e0000
162 #define LWZ_12_3 0x81830000
163 #define LWZ_12_12 0x818c0000
164 #define MR_0_3 0x7c601b78
165 #define MR_3_0 0x7c030378
166 #define MFLR_0 0x7c0802a6
167 #define MFLR_12 0x7d8802a6
168 #define MTCTR_0 0x7c0903a6
169 #define MTCTR_11 0x7d6903a6
170 #define MTLR_0 0x7c0803a6
171 #define NOP 0x60000000
172 #define SUB_11_11_12 0x7d6c5850
174 /* Offset of tp and dtp pointers from start of TLS block. */
175 #define TP_OFFSET 0x7000
176 #define DTP_OFFSET 0x8000
178 /* The value of a defined global symbol. */
179 #define SYM_VAL(SYM) \
180 ((SYM)->root.u.def.section->output_section->vma \
181 + (SYM)->root.u.def.section->output_offset \
182 + (SYM)->root.u.def.value)
184 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
186 static reloc_howto_type ppc_elf_howto_raw[] = {
187 /* This reloc does nothing. */
188 HOWTO (R_PPC_NONE, /* type */
190 3, /* size (0 = byte, 1 = short, 2 = long) */
192 FALSE, /* pc_relative */
194 complain_overflow_dont, /* complain_on_overflow */
195 bfd_elf_generic_reloc, /* special_function */
196 "R_PPC_NONE", /* name */
197 FALSE, /* partial_inplace */
200 FALSE), /* pcrel_offset */
202 /* A standard 32 bit relocation. */
203 HOWTO (R_PPC_ADDR32, /* type */
205 2, /* size (0 = byte, 1 = short, 2 = long) */
207 FALSE, /* pc_relative */
209 complain_overflow_dont, /* complain_on_overflow */
210 bfd_elf_generic_reloc, /* special_function */
211 "R_PPC_ADDR32", /* name */
212 FALSE, /* partial_inplace */
214 0xffffffff, /* dst_mask */
215 FALSE), /* pcrel_offset */
217 /* An absolute 26 bit branch; the lower two bits must be zero.
218 FIXME: we don't check that, we just clear them. */
219 HOWTO (R_PPC_ADDR24, /* type */
221 2, /* size (0 = byte, 1 = short, 2 = long) */
223 FALSE, /* pc_relative */
225 complain_overflow_signed, /* complain_on_overflow */
226 bfd_elf_generic_reloc, /* special_function */
227 "R_PPC_ADDR24", /* name */
228 FALSE, /* partial_inplace */
230 0x3fffffc, /* dst_mask */
231 FALSE), /* pcrel_offset */
233 /* A standard 16 bit relocation. */
234 HOWTO (R_PPC_ADDR16, /* type */
236 1, /* size (0 = byte, 1 = short, 2 = long) */
238 FALSE, /* pc_relative */
240 complain_overflow_bitfield, /* complain_on_overflow */
241 bfd_elf_generic_reloc, /* special_function */
242 "R_PPC_ADDR16", /* name */
243 FALSE, /* partial_inplace */
245 0xffff, /* dst_mask */
246 FALSE), /* pcrel_offset */
248 /* A 16 bit relocation without overflow. */
249 HOWTO (R_PPC_ADDR16_LO, /* type */
251 1, /* size (0 = byte, 1 = short, 2 = long) */
253 FALSE, /* pc_relative */
255 complain_overflow_dont,/* complain_on_overflow */
256 bfd_elf_generic_reloc, /* special_function */
257 "R_PPC_ADDR16_LO", /* name */
258 FALSE, /* partial_inplace */
260 0xffff, /* dst_mask */
261 FALSE), /* pcrel_offset */
263 /* The high order 16 bits of an address. */
264 HOWTO (R_PPC_ADDR16_HI, /* type */
266 1, /* size (0 = byte, 1 = short, 2 = long) */
268 FALSE, /* pc_relative */
270 complain_overflow_dont, /* complain_on_overflow */
271 bfd_elf_generic_reloc, /* special_function */
272 "R_PPC_ADDR16_HI", /* name */
273 FALSE, /* partial_inplace */
275 0xffff, /* dst_mask */
276 FALSE), /* pcrel_offset */
278 /* The high order 16 bits of an address, plus 1 if the contents of
279 the low 16 bits, treated as a signed number, is negative. */
280 HOWTO (R_PPC_ADDR16_HA, /* type */
282 1, /* size (0 = byte, 1 = short, 2 = long) */
284 FALSE, /* pc_relative */
286 complain_overflow_dont, /* complain_on_overflow */
287 ppc_elf_addr16_ha_reloc, /* special_function */
288 "R_PPC_ADDR16_HA", /* name */
289 FALSE, /* partial_inplace */
291 0xffff, /* dst_mask */
292 FALSE), /* pcrel_offset */
294 /* An absolute 16 bit branch; the lower two bits must be zero.
295 FIXME: we don't check that, we just clear them. */
296 HOWTO (R_PPC_ADDR14, /* type */
298 2, /* size (0 = byte, 1 = short, 2 = long) */
300 FALSE, /* pc_relative */
302 complain_overflow_signed, /* complain_on_overflow */
303 bfd_elf_generic_reloc, /* special_function */
304 "R_PPC_ADDR14", /* name */
305 FALSE, /* partial_inplace */
307 0xfffc, /* dst_mask */
308 FALSE), /* pcrel_offset */
310 /* An absolute 16 bit branch, for which bit 10 should be set to
311 indicate that the branch is expected to be taken. The lower two
312 bits must be zero. */
313 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
315 2, /* size (0 = byte, 1 = short, 2 = long) */
317 FALSE, /* pc_relative */
319 complain_overflow_signed, /* complain_on_overflow */
320 bfd_elf_generic_reloc, /* special_function */
321 "R_PPC_ADDR14_BRTAKEN",/* name */
322 FALSE, /* partial_inplace */
324 0xfffc, /* dst_mask */
325 FALSE), /* pcrel_offset */
327 /* An absolute 16 bit branch, for which bit 10 should be set to
328 indicate that the branch is not expected to be taken. The lower
329 two bits must be zero. */
330 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
332 2, /* size (0 = byte, 1 = short, 2 = long) */
334 FALSE, /* pc_relative */
336 complain_overflow_signed, /* complain_on_overflow */
337 bfd_elf_generic_reloc, /* special_function */
338 "R_PPC_ADDR14_BRNTAKEN",/* name */
339 FALSE, /* partial_inplace */
341 0xfffc, /* dst_mask */
342 FALSE), /* pcrel_offset */
344 /* A relative 26 bit branch; the lower two bits must be zero. */
345 HOWTO (R_PPC_REL24, /* type */
347 2, /* size (0 = byte, 1 = short, 2 = long) */
349 TRUE, /* pc_relative */
351 complain_overflow_signed, /* complain_on_overflow */
352 bfd_elf_generic_reloc, /* special_function */
353 "R_PPC_REL24", /* name */
354 FALSE, /* partial_inplace */
356 0x3fffffc, /* dst_mask */
357 TRUE), /* pcrel_offset */
359 /* A relative 16 bit branch; the lower two bits must be zero. */
360 HOWTO (R_PPC_REL14, /* type */
362 2, /* size (0 = byte, 1 = short, 2 = long) */
364 TRUE, /* pc_relative */
366 complain_overflow_signed, /* complain_on_overflow */
367 bfd_elf_generic_reloc, /* special_function */
368 "R_PPC_REL14", /* name */
369 FALSE, /* partial_inplace */
371 0xfffc, /* dst_mask */
372 TRUE), /* pcrel_offset */
374 /* A relative 16 bit branch. Bit 10 should be set to indicate that
375 the branch is expected to be taken. The lower two bits must be
377 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
381 TRUE, /* pc_relative */
383 complain_overflow_signed, /* complain_on_overflow */
384 bfd_elf_generic_reloc, /* special_function */
385 "R_PPC_REL14_BRTAKEN", /* name */
386 FALSE, /* partial_inplace */
388 0xfffc, /* dst_mask */
389 TRUE), /* pcrel_offset */
391 /* A relative 16 bit branch. Bit 10 should be set to indicate that
392 the branch is not expected to be taken. The lower two bits must
394 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
398 TRUE, /* pc_relative */
400 complain_overflow_signed, /* complain_on_overflow */
401 bfd_elf_generic_reloc, /* special_function */
402 "R_PPC_REL14_BRNTAKEN",/* name */
403 FALSE, /* partial_inplace */
405 0xfffc, /* dst_mask */
406 TRUE), /* pcrel_offset */
408 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
410 HOWTO (R_PPC_GOT16, /* type */
412 1, /* size (0 = byte, 1 = short, 2 = long) */
414 FALSE, /* pc_relative */
416 complain_overflow_signed, /* complain_on_overflow */
417 ppc_elf_unhandled_reloc, /* special_function */
418 "R_PPC_GOT16", /* name */
419 FALSE, /* partial_inplace */
421 0xffff, /* dst_mask */
422 FALSE), /* pcrel_offset */
424 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
426 HOWTO (R_PPC_GOT16_LO, /* type */
428 1, /* size (0 = byte, 1 = short, 2 = long) */
430 FALSE, /* pc_relative */
432 complain_overflow_dont, /* complain_on_overflow */
433 ppc_elf_unhandled_reloc, /* special_function */
434 "R_PPC_GOT16_LO", /* name */
435 FALSE, /* partial_inplace */
437 0xffff, /* dst_mask */
438 FALSE), /* pcrel_offset */
440 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
442 HOWTO (R_PPC_GOT16_HI, /* type */
444 1, /* size (0 = byte, 1 = short, 2 = long) */
446 FALSE, /* pc_relative */
448 complain_overflow_dont, /* complain_on_overflow */
449 ppc_elf_unhandled_reloc, /* special_function */
450 "R_PPC_GOT16_HI", /* name */
451 FALSE, /* partial_inplace */
453 0xffff, /* dst_mask */
454 FALSE), /* pcrel_offset */
456 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
458 HOWTO (R_PPC_GOT16_HA, /* type */
460 1, /* size (0 = byte, 1 = short, 2 = long) */
462 FALSE, /* pc_relative */
464 complain_overflow_dont, /* complain_on_overflow */
465 ppc_elf_unhandled_reloc, /* special_function */
466 "R_PPC_GOT16_HA", /* name */
467 FALSE, /* partial_inplace */
469 0xffff, /* dst_mask */
470 FALSE), /* pcrel_offset */
472 /* Like R_PPC_REL24, but referring to the procedure linkage table
473 entry for the symbol. */
474 HOWTO (R_PPC_PLTREL24, /* type */
476 2, /* size (0 = byte, 1 = short, 2 = long) */
478 TRUE, /* pc_relative */
480 complain_overflow_signed, /* complain_on_overflow */
481 ppc_elf_unhandled_reloc, /* special_function */
482 "R_PPC_PLTREL24", /* name */
483 FALSE, /* partial_inplace */
485 0x3fffffc, /* dst_mask */
486 TRUE), /* pcrel_offset */
488 /* This is used only by the dynamic linker. The symbol should exist
489 both in the object being run and in some shared library. The
490 dynamic linker copies the data addressed by the symbol from the
491 shared library into the object, because the object being
492 run has to have the data at some particular address. */
493 HOWTO (R_PPC_COPY, /* type */
495 2, /* size (0 = byte, 1 = short, 2 = long) */
497 FALSE, /* pc_relative */
499 complain_overflow_dont, /* complain_on_overflow */
500 ppc_elf_unhandled_reloc, /* special_function */
501 "R_PPC_COPY", /* name */
502 FALSE, /* partial_inplace */
505 FALSE), /* pcrel_offset */
507 /* Like R_PPC_ADDR32, but used when setting global offset table
509 HOWTO (R_PPC_GLOB_DAT, /* type */
511 2, /* size (0 = byte, 1 = short, 2 = long) */
513 FALSE, /* pc_relative */
515 complain_overflow_dont, /* complain_on_overflow */
516 ppc_elf_unhandled_reloc, /* special_function */
517 "R_PPC_GLOB_DAT", /* name */
518 FALSE, /* partial_inplace */
520 0xffffffff, /* dst_mask */
521 FALSE), /* pcrel_offset */
523 /* Marks a procedure linkage table entry for a symbol. */
524 HOWTO (R_PPC_JMP_SLOT, /* type */
526 2, /* size (0 = byte, 1 = short, 2 = long) */
528 FALSE, /* pc_relative */
530 complain_overflow_dont, /* complain_on_overflow */
531 ppc_elf_unhandled_reloc, /* special_function */
532 "R_PPC_JMP_SLOT", /* name */
533 FALSE, /* partial_inplace */
536 FALSE), /* pcrel_offset */
538 /* Used only by the dynamic linker. When the object is run, this
539 longword is set to the load address of the object, plus the
541 HOWTO (R_PPC_RELATIVE, /* type */
543 2, /* size (0 = byte, 1 = short, 2 = long) */
545 FALSE, /* pc_relative */
547 complain_overflow_dont, /* complain_on_overflow */
548 bfd_elf_generic_reloc, /* special_function */
549 "R_PPC_RELATIVE", /* name */
550 FALSE, /* partial_inplace */
552 0xffffffff, /* dst_mask */
553 FALSE), /* pcrel_offset */
555 /* Like R_PPC_REL24, but uses the value of the symbol within the
556 object rather than the final value. Normally used for
557 _GLOBAL_OFFSET_TABLE_. */
558 HOWTO (R_PPC_LOCAL24PC, /* type */
560 2, /* size (0 = byte, 1 = short, 2 = long) */
562 TRUE, /* pc_relative */
564 complain_overflow_signed, /* complain_on_overflow */
565 bfd_elf_generic_reloc, /* special_function */
566 "R_PPC_LOCAL24PC", /* name */
567 FALSE, /* partial_inplace */
569 0x3fffffc, /* dst_mask */
570 TRUE), /* pcrel_offset */
572 /* Like R_PPC_ADDR32, but may be unaligned. */
573 HOWTO (R_PPC_UADDR32, /* type */
575 2, /* size (0 = byte, 1 = short, 2 = long) */
577 FALSE, /* pc_relative */
579 complain_overflow_dont, /* complain_on_overflow */
580 bfd_elf_generic_reloc, /* special_function */
581 "R_PPC_UADDR32", /* name */
582 FALSE, /* partial_inplace */
584 0xffffffff, /* dst_mask */
585 FALSE), /* pcrel_offset */
587 /* Like R_PPC_ADDR16, but may be unaligned. */
588 HOWTO (R_PPC_UADDR16, /* type */
590 1, /* size (0 = byte, 1 = short, 2 = long) */
592 FALSE, /* pc_relative */
594 complain_overflow_bitfield, /* complain_on_overflow */
595 bfd_elf_generic_reloc, /* special_function */
596 "R_PPC_UADDR16", /* name */
597 FALSE, /* partial_inplace */
599 0xffff, /* dst_mask */
600 FALSE), /* pcrel_offset */
602 /* 32-bit PC relative */
603 HOWTO (R_PPC_REL32, /* type */
605 2, /* size (0 = byte, 1 = short, 2 = long) */
607 TRUE, /* pc_relative */
609 complain_overflow_dont, /* complain_on_overflow */
610 bfd_elf_generic_reloc, /* special_function */
611 "R_PPC_REL32", /* name */
612 FALSE, /* partial_inplace */
614 0xffffffff, /* dst_mask */
615 TRUE), /* pcrel_offset */
617 /* 32-bit relocation to the symbol's procedure linkage table.
618 FIXME: not supported. */
619 HOWTO (R_PPC_PLT32, /* type */
621 2, /* size (0 = byte, 1 = short, 2 = long) */
623 FALSE, /* pc_relative */
625 complain_overflow_dont, /* complain_on_overflow */
626 ppc_elf_unhandled_reloc, /* special_function */
627 "R_PPC_PLT32", /* name */
628 FALSE, /* partial_inplace */
631 FALSE), /* pcrel_offset */
633 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
634 FIXME: not supported. */
635 HOWTO (R_PPC_PLTREL32, /* type */
637 2, /* size (0 = byte, 1 = short, 2 = long) */
639 TRUE, /* pc_relative */
641 complain_overflow_dont, /* complain_on_overflow */
642 ppc_elf_unhandled_reloc, /* special_function */
643 "R_PPC_PLTREL32", /* name */
644 FALSE, /* partial_inplace */
647 TRUE), /* pcrel_offset */
649 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
651 HOWTO (R_PPC_PLT16_LO, /* type */
653 1, /* size (0 = byte, 1 = short, 2 = long) */
655 FALSE, /* pc_relative */
657 complain_overflow_dont, /* complain_on_overflow */
658 ppc_elf_unhandled_reloc, /* special_function */
659 "R_PPC_PLT16_LO", /* name */
660 FALSE, /* partial_inplace */
662 0xffff, /* dst_mask */
663 FALSE), /* pcrel_offset */
665 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
667 HOWTO (R_PPC_PLT16_HI, /* type */
669 1, /* size (0 = byte, 1 = short, 2 = long) */
671 FALSE, /* pc_relative */
673 complain_overflow_dont, /* complain_on_overflow */
674 ppc_elf_unhandled_reloc, /* special_function */
675 "R_PPC_PLT16_HI", /* name */
676 FALSE, /* partial_inplace */
678 0xffff, /* dst_mask */
679 FALSE), /* pcrel_offset */
681 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
683 HOWTO (R_PPC_PLT16_HA, /* type */
685 1, /* size (0 = byte, 1 = short, 2 = long) */
687 FALSE, /* pc_relative */
689 complain_overflow_dont, /* complain_on_overflow */
690 ppc_elf_unhandled_reloc, /* special_function */
691 "R_PPC_PLT16_HA", /* name */
692 FALSE, /* partial_inplace */
694 0xffff, /* dst_mask */
695 FALSE), /* pcrel_offset */
697 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
699 HOWTO (R_PPC_SDAREL16, /* type */
701 1, /* size (0 = byte, 1 = short, 2 = long) */
703 FALSE, /* pc_relative */
705 complain_overflow_signed, /* complain_on_overflow */
706 ppc_elf_unhandled_reloc, /* special_function */
707 "R_PPC_SDAREL16", /* name */
708 FALSE, /* partial_inplace */
710 0xffff, /* dst_mask */
711 FALSE), /* pcrel_offset */
713 /* 16-bit section relative relocation. */
714 HOWTO (R_PPC_SECTOFF, /* type */
716 1, /* size (0 = byte, 1 = short, 2 = long) */
718 FALSE, /* pc_relative */
720 complain_overflow_signed, /* complain_on_overflow */
721 ppc_elf_unhandled_reloc, /* special_function */
722 "R_PPC_SECTOFF", /* name */
723 FALSE, /* partial_inplace */
725 0xffff, /* dst_mask */
726 FALSE), /* pcrel_offset */
728 /* 16-bit lower half section relative relocation. */
729 HOWTO (R_PPC_SECTOFF_LO, /* type */
731 1, /* size (0 = byte, 1 = short, 2 = long) */
733 FALSE, /* pc_relative */
735 complain_overflow_dont, /* complain_on_overflow */
736 ppc_elf_unhandled_reloc, /* special_function */
737 "R_PPC_SECTOFF_LO", /* name */
738 FALSE, /* partial_inplace */
740 0xffff, /* dst_mask */
741 FALSE), /* pcrel_offset */
743 /* 16-bit upper half section relative relocation. */
744 HOWTO (R_PPC_SECTOFF_HI, /* type */
746 1, /* size (0 = byte, 1 = short, 2 = long) */
748 FALSE, /* pc_relative */
750 complain_overflow_dont, /* complain_on_overflow */
751 ppc_elf_unhandled_reloc, /* special_function */
752 "R_PPC_SECTOFF_HI", /* name */
753 FALSE, /* partial_inplace */
755 0xffff, /* dst_mask */
756 FALSE), /* pcrel_offset */
758 /* 16-bit upper half adjusted section relative relocation. */
759 HOWTO (R_PPC_SECTOFF_HA, /* type */
761 1, /* size (0 = byte, 1 = short, 2 = long) */
763 FALSE, /* pc_relative */
765 complain_overflow_dont, /* complain_on_overflow */
766 ppc_elf_unhandled_reloc, /* special_function */
767 "R_PPC_SECTOFF_HA", /* name */
768 FALSE, /* partial_inplace */
770 0xffff, /* dst_mask */
771 FALSE), /* pcrel_offset */
773 /* Marker relocs for TLS. */
776 2, /* size (0 = byte, 1 = short, 2 = long) */
778 FALSE, /* pc_relative */
780 complain_overflow_dont, /* complain_on_overflow */
781 bfd_elf_generic_reloc, /* special_function */
782 "R_PPC_TLS", /* name */
783 FALSE, /* partial_inplace */
786 FALSE), /* pcrel_offset */
790 2, /* size (0 = byte, 1 = short, 2 = long) */
792 FALSE, /* pc_relative */
794 complain_overflow_dont, /* complain_on_overflow */
795 bfd_elf_generic_reloc, /* special_function */
796 "R_PPC_TLSGD", /* name */
797 FALSE, /* partial_inplace */
800 FALSE), /* pcrel_offset */
804 2, /* size (0 = byte, 1 = short, 2 = long) */
806 FALSE, /* pc_relative */
808 complain_overflow_dont, /* complain_on_overflow */
809 bfd_elf_generic_reloc, /* special_function */
810 "R_PPC_TLSLD", /* name */
811 FALSE, /* partial_inplace */
814 FALSE), /* pcrel_offset */
816 /* Computes the load module index of the load module that contains the
817 definition of its TLS sym. */
818 HOWTO (R_PPC_DTPMOD32,
820 2, /* size (0 = byte, 1 = short, 2 = long) */
822 FALSE, /* pc_relative */
824 complain_overflow_dont, /* complain_on_overflow */
825 ppc_elf_unhandled_reloc, /* special_function */
826 "R_PPC_DTPMOD32", /* name */
827 FALSE, /* partial_inplace */
829 0xffffffff, /* dst_mask */
830 FALSE), /* pcrel_offset */
832 /* Computes a dtv-relative displacement, the difference between the value
833 of sym+add and the base address of the thread-local storage block that
834 contains the definition of sym, minus 0x8000. */
835 HOWTO (R_PPC_DTPREL32,
837 2, /* size (0 = byte, 1 = short, 2 = long) */
839 FALSE, /* pc_relative */
841 complain_overflow_dont, /* complain_on_overflow */
842 ppc_elf_unhandled_reloc, /* special_function */
843 "R_PPC_DTPREL32", /* name */
844 FALSE, /* partial_inplace */
846 0xffffffff, /* dst_mask */
847 FALSE), /* pcrel_offset */
849 /* A 16 bit dtprel reloc. */
850 HOWTO (R_PPC_DTPREL16,
852 1, /* size (0 = byte, 1 = short, 2 = long) */
854 FALSE, /* pc_relative */
856 complain_overflow_signed, /* complain_on_overflow */
857 ppc_elf_unhandled_reloc, /* special_function */
858 "R_PPC_DTPREL16", /* name */
859 FALSE, /* partial_inplace */
861 0xffff, /* dst_mask */
862 FALSE), /* pcrel_offset */
864 /* Like DTPREL16, but no overflow. */
865 HOWTO (R_PPC_DTPREL16_LO,
867 1, /* size (0 = byte, 1 = short, 2 = long) */
869 FALSE, /* pc_relative */
871 complain_overflow_dont, /* complain_on_overflow */
872 ppc_elf_unhandled_reloc, /* special_function */
873 "R_PPC_DTPREL16_LO", /* name */
874 FALSE, /* partial_inplace */
876 0xffff, /* dst_mask */
877 FALSE), /* pcrel_offset */
879 /* Like DTPREL16_LO, but next higher group of 16 bits. */
880 HOWTO (R_PPC_DTPREL16_HI,
882 1, /* size (0 = byte, 1 = short, 2 = long) */
884 FALSE, /* pc_relative */
886 complain_overflow_dont, /* complain_on_overflow */
887 ppc_elf_unhandled_reloc, /* special_function */
888 "R_PPC_DTPREL16_HI", /* name */
889 FALSE, /* partial_inplace */
891 0xffff, /* dst_mask */
892 FALSE), /* pcrel_offset */
894 /* Like DTPREL16_HI, but adjust for low 16 bits. */
895 HOWTO (R_PPC_DTPREL16_HA,
897 1, /* size (0 = byte, 1 = short, 2 = long) */
899 FALSE, /* pc_relative */
901 complain_overflow_dont, /* complain_on_overflow */
902 ppc_elf_unhandled_reloc, /* special_function */
903 "R_PPC_DTPREL16_HA", /* name */
904 FALSE, /* partial_inplace */
906 0xffff, /* dst_mask */
907 FALSE), /* pcrel_offset */
909 /* Computes a tp-relative displacement, the difference between the value of
910 sym+add and the value of the thread pointer (r13). */
911 HOWTO (R_PPC_TPREL32,
913 2, /* size (0 = byte, 1 = short, 2 = long) */
915 FALSE, /* pc_relative */
917 complain_overflow_dont, /* complain_on_overflow */
918 ppc_elf_unhandled_reloc, /* special_function */
919 "R_PPC_TPREL32", /* name */
920 FALSE, /* partial_inplace */
922 0xffffffff, /* dst_mask */
923 FALSE), /* pcrel_offset */
925 /* A 16 bit tprel reloc. */
926 HOWTO (R_PPC_TPREL16,
928 1, /* size (0 = byte, 1 = short, 2 = long) */
930 FALSE, /* pc_relative */
932 complain_overflow_signed, /* complain_on_overflow */
933 ppc_elf_unhandled_reloc, /* special_function */
934 "R_PPC_TPREL16", /* name */
935 FALSE, /* partial_inplace */
937 0xffff, /* dst_mask */
938 FALSE), /* pcrel_offset */
940 /* Like TPREL16, but no overflow. */
941 HOWTO (R_PPC_TPREL16_LO,
943 1, /* size (0 = byte, 1 = short, 2 = long) */
945 FALSE, /* pc_relative */
947 complain_overflow_dont, /* complain_on_overflow */
948 ppc_elf_unhandled_reloc, /* special_function */
949 "R_PPC_TPREL16_LO", /* name */
950 FALSE, /* partial_inplace */
952 0xffff, /* dst_mask */
953 FALSE), /* pcrel_offset */
955 /* Like TPREL16_LO, but next higher group of 16 bits. */
956 HOWTO (R_PPC_TPREL16_HI,
958 1, /* size (0 = byte, 1 = short, 2 = long) */
960 FALSE, /* pc_relative */
962 complain_overflow_dont, /* complain_on_overflow */
963 ppc_elf_unhandled_reloc, /* special_function */
964 "R_PPC_TPREL16_HI", /* name */
965 FALSE, /* partial_inplace */
967 0xffff, /* dst_mask */
968 FALSE), /* pcrel_offset */
970 /* Like TPREL16_HI, but adjust for low 16 bits. */
971 HOWTO (R_PPC_TPREL16_HA,
973 1, /* size (0 = byte, 1 = short, 2 = long) */
975 FALSE, /* pc_relative */
977 complain_overflow_dont, /* complain_on_overflow */
978 ppc_elf_unhandled_reloc, /* special_function */
979 "R_PPC_TPREL16_HA", /* name */
980 FALSE, /* partial_inplace */
982 0xffff, /* dst_mask */
983 FALSE), /* pcrel_offset */
985 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
986 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
987 to the first entry. */
988 HOWTO (R_PPC_GOT_TLSGD16,
990 1, /* size (0 = byte, 1 = short, 2 = long) */
992 FALSE, /* pc_relative */
994 complain_overflow_signed, /* complain_on_overflow */
995 ppc_elf_unhandled_reloc, /* special_function */
996 "R_PPC_GOT_TLSGD16", /* name */
997 FALSE, /* partial_inplace */
999 0xffff, /* dst_mask */
1000 FALSE), /* pcrel_offset */
1002 /* Like GOT_TLSGD16, but no overflow. */
1003 HOWTO (R_PPC_GOT_TLSGD16_LO,
1005 1, /* size (0 = byte, 1 = short, 2 = long) */
1007 FALSE, /* pc_relative */
1009 complain_overflow_dont, /* complain_on_overflow */
1010 ppc_elf_unhandled_reloc, /* special_function */
1011 "R_PPC_GOT_TLSGD16_LO", /* name */
1012 FALSE, /* partial_inplace */
1014 0xffff, /* dst_mask */
1015 FALSE), /* pcrel_offset */
1017 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1018 HOWTO (R_PPC_GOT_TLSGD16_HI,
1019 16, /* rightshift */
1020 1, /* size (0 = byte, 1 = short, 2 = long) */
1022 FALSE, /* pc_relative */
1024 complain_overflow_dont, /* complain_on_overflow */
1025 ppc_elf_unhandled_reloc, /* special_function */
1026 "R_PPC_GOT_TLSGD16_HI", /* name */
1027 FALSE, /* partial_inplace */
1029 0xffff, /* dst_mask */
1030 FALSE), /* pcrel_offset */
1032 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1033 HOWTO (R_PPC_GOT_TLSGD16_HA,
1034 16, /* rightshift */
1035 1, /* size (0 = byte, 1 = short, 2 = long) */
1037 FALSE, /* pc_relative */
1039 complain_overflow_dont, /* complain_on_overflow */
1040 ppc_elf_unhandled_reloc, /* special_function */
1041 "R_PPC_GOT_TLSGD16_HA", /* name */
1042 FALSE, /* partial_inplace */
1044 0xffff, /* dst_mask */
1045 FALSE), /* pcrel_offset */
1047 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1048 with values (sym+add)@dtpmod and zero, and computes the offset to the
1050 HOWTO (R_PPC_GOT_TLSLD16,
1052 1, /* size (0 = byte, 1 = short, 2 = long) */
1054 FALSE, /* pc_relative */
1056 complain_overflow_signed, /* complain_on_overflow */
1057 ppc_elf_unhandled_reloc, /* special_function */
1058 "R_PPC_GOT_TLSLD16", /* name */
1059 FALSE, /* partial_inplace */
1061 0xffff, /* dst_mask */
1062 FALSE), /* pcrel_offset */
1064 /* Like GOT_TLSLD16, but no overflow. */
1065 HOWTO (R_PPC_GOT_TLSLD16_LO,
1067 1, /* size (0 = byte, 1 = short, 2 = long) */
1069 FALSE, /* pc_relative */
1071 complain_overflow_dont, /* complain_on_overflow */
1072 ppc_elf_unhandled_reloc, /* special_function */
1073 "R_PPC_GOT_TLSLD16_LO", /* name */
1074 FALSE, /* partial_inplace */
1076 0xffff, /* dst_mask */
1077 FALSE), /* pcrel_offset */
1079 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1080 HOWTO (R_PPC_GOT_TLSLD16_HI,
1081 16, /* rightshift */
1082 1, /* size (0 = byte, 1 = short, 2 = long) */
1084 FALSE, /* pc_relative */
1086 complain_overflow_dont, /* complain_on_overflow */
1087 ppc_elf_unhandled_reloc, /* special_function */
1088 "R_PPC_GOT_TLSLD16_HI", /* name */
1089 FALSE, /* partial_inplace */
1091 0xffff, /* dst_mask */
1092 FALSE), /* pcrel_offset */
1094 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1095 HOWTO (R_PPC_GOT_TLSLD16_HA,
1096 16, /* rightshift */
1097 1, /* size (0 = byte, 1 = short, 2 = long) */
1099 FALSE, /* pc_relative */
1101 complain_overflow_dont, /* complain_on_overflow */
1102 ppc_elf_unhandled_reloc, /* special_function */
1103 "R_PPC_GOT_TLSLD16_HA", /* name */
1104 FALSE, /* partial_inplace */
1106 0xffff, /* dst_mask */
1107 FALSE), /* pcrel_offset */
1109 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1110 the offset to the entry. */
1111 HOWTO (R_PPC_GOT_DTPREL16,
1113 1, /* size (0 = byte, 1 = short, 2 = long) */
1115 FALSE, /* pc_relative */
1117 complain_overflow_signed, /* complain_on_overflow */
1118 ppc_elf_unhandled_reloc, /* special_function */
1119 "R_PPC_GOT_DTPREL16", /* name */
1120 FALSE, /* partial_inplace */
1122 0xffff, /* dst_mask */
1123 FALSE), /* pcrel_offset */
1125 /* Like GOT_DTPREL16, but no overflow. */
1126 HOWTO (R_PPC_GOT_DTPREL16_LO,
1128 1, /* size (0 = byte, 1 = short, 2 = long) */
1130 FALSE, /* pc_relative */
1132 complain_overflow_dont, /* complain_on_overflow */
1133 ppc_elf_unhandled_reloc, /* special_function */
1134 "R_PPC_GOT_DTPREL16_LO", /* name */
1135 FALSE, /* partial_inplace */
1137 0xffff, /* dst_mask */
1138 FALSE), /* pcrel_offset */
1140 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1141 HOWTO (R_PPC_GOT_DTPREL16_HI,
1142 16, /* rightshift */
1143 1, /* size (0 = byte, 1 = short, 2 = long) */
1145 FALSE, /* pc_relative */
1147 complain_overflow_dont, /* complain_on_overflow */
1148 ppc_elf_unhandled_reloc, /* special_function */
1149 "R_PPC_GOT_DTPREL16_HI", /* name */
1150 FALSE, /* partial_inplace */
1152 0xffff, /* dst_mask */
1153 FALSE), /* pcrel_offset */
1155 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1156 HOWTO (R_PPC_GOT_DTPREL16_HA,
1157 16, /* rightshift */
1158 1, /* size (0 = byte, 1 = short, 2 = long) */
1160 FALSE, /* pc_relative */
1162 complain_overflow_dont, /* complain_on_overflow */
1163 ppc_elf_unhandled_reloc, /* special_function */
1164 "R_PPC_GOT_DTPREL16_HA", /* name */
1165 FALSE, /* partial_inplace */
1167 0xffff, /* dst_mask */
1168 FALSE), /* pcrel_offset */
1170 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1171 offset to the entry. */
1172 HOWTO (R_PPC_GOT_TPREL16,
1174 1, /* size (0 = byte, 1 = short, 2 = long) */
1176 FALSE, /* pc_relative */
1178 complain_overflow_signed, /* complain_on_overflow */
1179 ppc_elf_unhandled_reloc, /* special_function */
1180 "R_PPC_GOT_TPREL16", /* name */
1181 FALSE, /* partial_inplace */
1183 0xffff, /* dst_mask */
1184 FALSE), /* pcrel_offset */
1186 /* Like GOT_TPREL16, but no overflow. */
1187 HOWTO (R_PPC_GOT_TPREL16_LO,
1189 1, /* size (0 = byte, 1 = short, 2 = long) */
1191 FALSE, /* pc_relative */
1193 complain_overflow_dont, /* complain_on_overflow */
1194 ppc_elf_unhandled_reloc, /* special_function */
1195 "R_PPC_GOT_TPREL16_LO", /* name */
1196 FALSE, /* partial_inplace */
1198 0xffff, /* dst_mask */
1199 FALSE), /* pcrel_offset */
1201 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1202 HOWTO (R_PPC_GOT_TPREL16_HI,
1203 16, /* rightshift */
1204 1, /* size (0 = byte, 1 = short, 2 = long) */
1206 FALSE, /* pc_relative */
1208 complain_overflow_dont, /* complain_on_overflow */
1209 ppc_elf_unhandled_reloc, /* special_function */
1210 "R_PPC_GOT_TPREL16_HI", /* name */
1211 FALSE, /* partial_inplace */
1213 0xffff, /* dst_mask */
1214 FALSE), /* pcrel_offset */
1216 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1217 HOWTO (R_PPC_GOT_TPREL16_HA,
1218 16, /* rightshift */
1219 1, /* size (0 = byte, 1 = short, 2 = long) */
1221 FALSE, /* pc_relative */
1223 complain_overflow_dont, /* complain_on_overflow */
1224 ppc_elf_unhandled_reloc, /* special_function */
1225 "R_PPC_GOT_TPREL16_HA", /* name */
1226 FALSE, /* partial_inplace */
1228 0xffff, /* dst_mask */
1229 FALSE), /* pcrel_offset */
1231 /* The remaining relocs are from the Embedded ELF ABI, and are not
1232 in the SVR4 ELF ABI. */
1234 /* 32 bit value resulting from the addend minus the symbol. */
1235 HOWTO (R_PPC_EMB_NADDR32, /* type */
1237 2, /* size (0 = byte, 1 = short, 2 = long) */
1239 FALSE, /* pc_relative */
1241 complain_overflow_dont, /* complain_on_overflow */
1242 ppc_elf_unhandled_reloc, /* special_function */
1243 "R_PPC_EMB_NADDR32", /* name */
1244 FALSE, /* partial_inplace */
1246 0xffffffff, /* dst_mask */
1247 FALSE), /* pcrel_offset */
1249 /* 16 bit value resulting from the addend minus the symbol. */
1250 HOWTO (R_PPC_EMB_NADDR16, /* type */
1252 1, /* size (0 = byte, 1 = short, 2 = long) */
1254 FALSE, /* pc_relative */
1256 complain_overflow_signed, /* complain_on_overflow */
1257 ppc_elf_unhandled_reloc, /* special_function */
1258 "R_PPC_EMB_NADDR16", /* name */
1259 FALSE, /* partial_inplace */
1261 0xffff, /* dst_mask */
1262 FALSE), /* pcrel_offset */
1264 /* 16 bit value resulting from the addend minus the symbol. */
1265 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1267 1, /* size (0 = byte, 1 = short, 2 = long) */
1269 FALSE, /* pc_relative */
1271 complain_overflow_dont,/* complain_on_overflow */
1272 ppc_elf_unhandled_reloc, /* special_function */
1273 "R_PPC_EMB_ADDR16_LO", /* name */
1274 FALSE, /* partial_inplace */
1276 0xffff, /* dst_mask */
1277 FALSE), /* pcrel_offset */
1279 /* The high order 16 bits of the addend minus the symbol. */
1280 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1281 16, /* rightshift */
1282 1, /* size (0 = byte, 1 = short, 2 = long) */
1284 FALSE, /* pc_relative */
1286 complain_overflow_dont, /* complain_on_overflow */
1287 ppc_elf_unhandled_reloc, /* special_function */
1288 "R_PPC_EMB_NADDR16_HI", /* name */
1289 FALSE, /* partial_inplace */
1291 0xffff, /* dst_mask */
1292 FALSE), /* pcrel_offset */
1294 /* The high order 16 bits of the result of the addend minus the address,
1295 plus 1 if the contents of the low 16 bits, treated as a signed number,
1297 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1298 16, /* rightshift */
1299 1, /* size (0 = byte, 1 = short, 2 = long) */
1301 FALSE, /* pc_relative */
1303 complain_overflow_dont, /* complain_on_overflow */
1304 ppc_elf_unhandled_reloc, /* special_function */
1305 "R_PPC_EMB_NADDR16_HA", /* name */
1306 FALSE, /* partial_inplace */
1308 0xffff, /* dst_mask */
1309 FALSE), /* pcrel_offset */
1311 /* 16 bit value resulting from allocating a 4 byte word to hold an
1312 address in the .sdata section, and returning the offset from
1313 _SDA_BASE_ for that relocation. */
1314 HOWTO (R_PPC_EMB_SDAI16, /* type */
1316 1, /* size (0 = byte, 1 = short, 2 = long) */
1318 FALSE, /* pc_relative */
1320 complain_overflow_signed, /* complain_on_overflow */
1321 ppc_elf_unhandled_reloc, /* special_function */
1322 "R_PPC_EMB_SDAI16", /* name */
1323 FALSE, /* partial_inplace */
1325 0xffff, /* dst_mask */
1326 FALSE), /* pcrel_offset */
1328 /* 16 bit value resulting from allocating a 4 byte word to hold an
1329 address in the .sdata2 section, and returning the offset from
1330 _SDA2_BASE_ for that relocation. */
1331 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1333 1, /* size (0 = byte, 1 = short, 2 = long) */
1335 FALSE, /* pc_relative */
1337 complain_overflow_signed, /* complain_on_overflow */
1338 ppc_elf_unhandled_reloc, /* special_function */
1339 "R_PPC_EMB_SDA2I16", /* name */
1340 FALSE, /* partial_inplace */
1342 0xffff, /* dst_mask */
1343 FALSE), /* pcrel_offset */
1345 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1346 small data items. */
1347 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1349 1, /* size (0 = byte, 1 = short, 2 = long) */
1351 FALSE, /* pc_relative */
1353 complain_overflow_signed, /* complain_on_overflow */
1354 ppc_elf_unhandled_reloc, /* special_function */
1355 "R_PPC_EMB_SDA2REL", /* name */
1356 FALSE, /* partial_inplace */
1358 0xffff, /* dst_mask */
1359 FALSE), /* pcrel_offset */
1361 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1362 signed offset from the appropriate base, and filling in the register
1363 field with the appropriate register (0, 2, or 13). */
1364 HOWTO (R_PPC_EMB_SDA21, /* type */
1366 2, /* size (0 = byte, 1 = short, 2 = long) */
1368 FALSE, /* pc_relative */
1370 complain_overflow_signed, /* complain_on_overflow */
1371 ppc_elf_unhandled_reloc, /* special_function */
1372 "R_PPC_EMB_SDA21", /* name */
1373 FALSE, /* partial_inplace */
1375 0xffff, /* dst_mask */
1376 FALSE), /* pcrel_offset */
1378 /* Relocation not handled: R_PPC_EMB_MRKREF */
1379 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1380 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1381 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1382 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1383 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1385 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1386 in the 16 bit signed offset from the appropriate base, and filling in the
1387 register field with the appropriate register (0, 2, or 13). */
1388 HOWTO (R_PPC_EMB_RELSDA, /* type */
1390 1, /* size (0 = byte, 1 = short, 2 = long) */
1392 FALSE, /* pc_relative */
1394 complain_overflow_signed, /* complain_on_overflow */
1395 ppc_elf_unhandled_reloc, /* special_function */
1396 "R_PPC_EMB_RELSDA", /* name */
1397 FALSE, /* partial_inplace */
1399 0xffff, /* dst_mask */
1400 FALSE), /* pcrel_offset */
1402 /* A relative 8 bit branch. */
1403 HOWTO (R_PPC_VLE_REL8, /* type */
1405 1, /* size (0 = byte, 1 = short, 2 = long) */
1407 TRUE, /* pc_relative */
1409 complain_overflow_signed, /* complain_on_overflow */
1410 bfd_elf_generic_reloc, /* special_function */
1411 "R_PPC_VLE_REL8", /* name */
1412 FALSE, /* partial_inplace */
1414 0xff, /* dst_mask */
1415 TRUE), /* pcrel_offset */
1417 /* A relative 15 bit branch. */
1418 HOWTO (R_PPC_VLE_REL15, /* type */
1420 2, /* size (0 = byte, 1 = short, 2 = long) */
1422 TRUE, /* pc_relative */
1424 complain_overflow_signed, /* complain_on_overflow */
1425 bfd_elf_generic_reloc, /* special_function */
1426 "R_PPC_VLE_REL15", /* name */
1427 FALSE, /* partial_inplace */
1429 0xfffe, /* dst_mask */
1430 TRUE), /* pcrel_offset */
1432 /* A relative 24 bit branch. */
1433 HOWTO (R_PPC_VLE_REL24, /* type */
1435 2, /* size (0 = byte, 1 = short, 2 = long) */
1437 TRUE, /* pc_relative */
1439 complain_overflow_signed, /* complain_on_overflow */
1440 bfd_elf_generic_reloc, /* special_function */
1441 "R_PPC_VLE_REL24", /* name */
1442 FALSE, /* partial_inplace */
1444 0x1fffffe, /* dst_mask */
1445 TRUE), /* pcrel_offset */
1447 /* The 16 LSBS in split16a format. */
1448 HOWTO (R_PPC_VLE_LO16A, /* type */
1450 2, /* size (0 = byte, 1 = short, 2 = long) */
1452 FALSE, /* pc_relative */
1454 complain_overflow_dont, /* complain_on_overflow */
1455 ppc_elf_unhandled_reloc, /* special_function */
1456 "R_PPC_VLE_LO16A", /* name */
1457 FALSE, /* partial_inplace */
1459 0x1f07ff, /* dst_mask */
1460 FALSE), /* pcrel_offset */
1462 /* The 16 LSBS in split16d format. */
1463 HOWTO (R_PPC_VLE_LO16D, /* type */
1465 2, /* size (0 = byte, 1 = short, 2 = long) */
1467 FALSE, /* pc_relative */
1469 complain_overflow_dont, /* complain_on_overflow */
1470 ppc_elf_unhandled_reloc, /* special_function */
1471 "R_PPC_VLE_LO16D", /* name */
1472 FALSE, /* partial_inplace */
1474 0x3e007ff, /* dst_mask */
1475 FALSE), /* pcrel_offset */
1477 /* Bits 16-31 split16a format. */
1478 HOWTO (R_PPC_VLE_HI16A, /* type */
1479 16, /* rightshift */
1480 2, /* size (0 = byte, 1 = short, 2 = long) */
1482 FALSE, /* pc_relative */
1484 complain_overflow_dont, /* complain_on_overflow */
1485 ppc_elf_unhandled_reloc, /* special_function */
1486 "R_PPC_VLE_HI16A", /* name */
1487 FALSE, /* partial_inplace */
1489 0x1f07ff, /* dst_mask */
1490 FALSE), /* pcrel_offset */
1492 /* Bits 16-31 split16d format. */
1493 HOWTO (R_PPC_VLE_HI16D, /* type */
1494 16, /* rightshift */
1495 2, /* size (0 = byte, 1 = short, 2 = long) */
1497 FALSE, /* pc_relative */
1499 complain_overflow_dont, /* complain_on_overflow */
1500 ppc_elf_unhandled_reloc, /* special_function */
1501 "R_PPC_VLE_HI16D", /* name */
1502 FALSE, /* partial_inplace */
1504 0x3e007ff, /* dst_mask */
1505 FALSE), /* pcrel_offset */
1507 /* Bits 16-31 (High Adjusted) in split16a format. */
1508 HOWTO (R_PPC_VLE_HA16A, /* type */
1509 16, /* rightshift */
1510 2, /* size (0 = byte, 1 = short, 2 = long) */
1512 FALSE, /* pc_relative */
1514 complain_overflow_dont, /* complain_on_overflow */
1515 ppc_elf_unhandled_reloc, /* special_function */
1516 "R_PPC_VLE_HA16A", /* name */
1517 FALSE, /* partial_inplace */
1519 0x1f07ff, /* dst_mask */
1520 FALSE), /* pcrel_offset */
1522 /* Bits 16-31 (High Adjusted) in split16d format. */
1523 HOWTO (R_PPC_VLE_HA16D, /* type */
1524 16, /* rightshift */
1525 2, /* size (0 = byte, 1 = short, 2 = long) */
1527 FALSE, /* pc_relative */
1529 complain_overflow_dont, /* complain_on_overflow */
1530 ppc_elf_unhandled_reloc, /* special_function */
1531 "R_PPC_VLE_HA16D", /* name */
1532 FALSE, /* partial_inplace */
1534 0x3e007ff, /* dst_mask */
1535 FALSE), /* pcrel_offset */
1537 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1538 instructions. If the register base is 0 then the linker changes
1539 the e_add16i to an e_li instruction. */
1540 HOWTO (R_PPC_VLE_SDA21, /* type */
1542 2, /* size (0 = byte, 1 = short, 2 = long) */
1544 FALSE, /* pc_relative */
1546 complain_overflow_signed, /* complain_on_overflow */
1547 ppc_elf_unhandled_reloc, /* special_function */
1548 "R_PPC_VLE_SDA21", /* name */
1549 FALSE, /* partial_inplace */
1551 0xffff, /* dst_mask */
1552 FALSE), /* pcrel_offset */
1554 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
1555 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1557 2, /* size (0 = byte, 1 = short, 2 = long) */
1559 FALSE, /* pc_relative */
1561 complain_overflow_dont, /* complain_on_overflow */
1562 ppc_elf_unhandled_reloc, /* special_function */
1563 "R_PPC_VLE_SDA21_LO", /* name */
1564 FALSE, /* partial_inplace */
1566 0xffff, /* dst_mask */
1567 FALSE), /* pcrel_offset */
1569 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1570 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1572 2, /* size (0 = byte, 1 = short, 2 = long) */
1574 FALSE, /* pc_relative */
1576 complain_overflow_dont, /* complain_on_overflow */
1577 ppc_elf_unhandled_reloc, /* special_function */
1578 "R_PPC_VLE_SDAREL_LO16A", /* name */
1579 FALSE, /* partial_inplace */
1581 0x1f07ff, /* dst_mask */
1582 FALSE), /* pcrel_offset */
1584 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1585 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1587 2, /* size (0 = byte, 1 = short, 2 = long) */
1589 FALSE, /* pc_relative */
1591 complain_overflow_dont, /* complain_on_overflow */
1592 ppc_elf_unhandled_reloc, /* special_function */
1593 "R_PPC_VLE_SDAREL_LO16D", /* name */
1594 FALSE, /* partial_inplace */
1596 0x3e007ff, /* dst_mask */
1597 FALSE), /* pcrel_offset */
1599 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1600 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1601 16, /* rightshift */
1602 2, /* size (0 = byte, 1 = short, 2 = long) */
1604 FALSE, /* pc_relative */
1606 complain_overflow_dont, /* complain_on_overflow */
1607 ppc_elf_unhandled_reloc, /* special_function */
1608 "R_PPC_VLE_SDAREL_HI16A", /* name */
1609 FALSE, /* partial_inplace */
1611 0x1f07ff, /* dst_mask */
1612 FALSE), /* pcrel_offset */
1614 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1615 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1616 16, /* rightshift */
1617 2, /* size (0 = byte, 1 = short, 2 = long) */
1619 FALSE, /* pc_relative */
1621 complain_overflow_dont, /* complain_on_overflow */
1622 ppc_elf_unhandled_reloc, /* special_function */
1623 "R_PPC_VLE_SDAREL_HI16D", /* name */
1624 FALSE, /* partial_inplace */
1626 0x3e007ff, /* dst_mask */
1627 FALSE), /* pcrel_offset */
1629 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1630 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1631 16, /* rightshift */
1632 2, /* size (0 = byte, 1 = short, 2 = long) */
1634 FALSE, /* pc_relative */
1636 complain_overflow_dont, /* complain_on_overflow */
1637 ppc_elf_unhandled_reloc, /* special_function */
1638 "R_PPC_VLE_SDAREL_HA16A", /* name */
1639 FALSE, /* partial_inplace */
1641 0x1f07ff, /* dst_mask */
1642 FALSE), /* pcrel_offset */
1644 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1645 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1646 16, /* rightshift */
1647 2, /* size (0 = byte, 1 = short, 2 = long) */
1649 FALSE, /* pc_relative */
1651 complain_overflow_dont, /* complain_on_overflow */
1652 ppc_elf_unhandled_reloc, /* special_function */
1653 "R_PPC_VLE_SDAREL_HA16D", /* name */
1654 FALSE, /* partial_inplace */
1656 0x3e007ff, /* dst_mask */
1657 FALSE), /* pcrel_offset */
1659 HOWTO (R_PPC_IRELATIVE, /* type */
1661 2, /* size (0 = byte, 1 = short, 2 = long) */
1663 FALSE, /* pc_relative */
1665 complain_overflow_dont, /* complain_on_overflow */
1666 ppc_elf_unhandled_reloc, /* special_function */
1667 "R_PPC_IRELATIVE", /* name */
1668 FALSE, /* partial_inplace */
1670 0xffffffff, /* dst_mask */
1671 FALSE), /* pcrel_offset */
1673 /* A 16 bit relative relocation. */
1674 HOWTO (R_PPC_REL16, /* type */
1676 1, /* size (0 = byte, 1 = short, 2 = long) */
1678 TRUE, /* pc_relative */
1680 complain_overflow_signed, /* complain_on_overflow */
1681 bfd_elf_generic_reloc, /* special_function */
1682 "R_PPC_REL16", /* name */
1683 FALSE, /* partial_inplace */
1685 0xffff, /* dst_mask */
1686 TRUE), /* pcrel_offset */
1688 /* A 16 bit relative relocation without overflow. */
1689 HOWTO (R_PPC_REL16_LO, /* type */
1691 1, /* size (0 = byte, 1 = short, 2 = long) */
1693 TRUE, /* pc_relative */
1695 complain_overflow_dont,/* complain_on_overflow */
1696 bfd_elf_generic_reloc, /* special_function */
1697 "R_PPC_REL16_LO", /* name */
1698 FALSE, /* partial_inplace */
1700 0xffff, /* dst_mask */
1701 TRUE), /* pcrel_offset */
1703 /* The high order 16 bits of a relative address. */
1704 HOWTO (R_PPC_REL16_HI, /* type */
1705 16, /* rightshift */
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1708 TRUE, /* pc_relative */
1710 complain_overflow_dont, /* complain_on_overflow */
1711 bfd_elf_generic_reloc, /* special_function */
1712 "R_PPC_REL16_HI", /* name */
1713 FALSE, /* partial_inplace */
1715 0xffff, /* dst_mask */
1716 TRUE), /* pcrel_offset */
1718 /* The high order 16 bits of a relative address, plus 1 if the contents of
1719 the low 16 bits, treated as a signed number, is negative. */
1720 HOWTO (R_PPC_REL16_HA, /* type */
1721 16, /* rightshift */
1722 1, /* size (0 = byte, 1 = short, 2 = long) */
1724 TRUE, /* pc_relative */
1726 complain_overflow_dont, /* complain_on_overflow */
1727 ppc_elf_addr16_ha_reloc, /* special_function */
1728 "R_PPC_REL16_HA", /* name */
1729 FALSE, /* partial_inplace */
1731 0xffff, /* dst_mask */
1732 TRUE), /* pcrel_offset */
1734 /* Like R_PPC_REL16_HA but for split field in addpcis. */
1735 HOWTO (R_PPC_REL16DX_HA, /* type */
1736 16, /* rightshift */
1737 2, /* size (0 = byte, 1 = short, 2 = long) */
1739 TRUE, /* pc_relative */
1741 complain_overflow_signed, /* complain_on_overflow */
1742 ppc_elf_addr16_ha_reloc, /* special_function */
1743 "R_PPC_REL16DX_HA", /* name */
1744 FALSE, /* partial_inplace */
1746 0x1fffc1, /* dst_mask */
1747 TRUE), /* pcrel_offset */
1749 /* A split-field reloc for addpcis, non-relative (gas internal use only). */
1750 HOWTO (R_PPC_16DX_HA, /* type */
1751 16, /* rightshift */
1752 2, /* size (0 = byte, 1 = short, 2 = long) */
1754 FALSE, /* pc_relative */
1756 complain_overflow_signed, /* complain_on_overflow */
1757 ppc_elf_addr16_ha_reloc, /* special_function */
1758 "R_PPC_16DX_HA", /* name */
1759 FALSE, /* partial_inplace */
1761 0x1fffc1, /* dst_mask */
1762 FALSE), /* pcrel_offset */
1764 /* GNU extension to record C++ vtable hierarchy. */
1765 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1767 0, /* size (0 = byte, 1 = short, 2 = long) */
1769 FALSE, /* pc_relative */
1771 complain_overflow_dont, /* complain_on_overflow */
1772 NULL, /* special_function */
1773 "R_PPC_GNU_VTINHERIT", /* name */
1774 FALSE, /* partial_inplace */
1777 FALSE), /* pcrel_offset */
1779 /* GNU extension to record C++ vtable member usage. */
1780 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1782 0, /* size (0 = byte, 1 = short, 2 = long) */
1784 FALSE, /* pc_relative */
1786 complain_overflow_dont, /* complain_on_overflow */
1787 NULL, /* special_function */
1788 "R_PPC_GNU_VTENTRY", /* name */
1789 FALSE, /* partial_inplace */
1792 FALSE), /* pcrel_offset */
1794 /* Phony reloc to handle AIX style TOC entries. */
1795 HOWTO (R_PPC_TOC16, /* type */
1797 1, /* size (0 = byte, 1 = short, 2 = long) */
1799 FALSE, /* pc_relative */
1801 complain_overflow_signed, /* complain_on_overflow */
1802 ppc_elf_unhandled_reloc, /* special_function */
1803 "R_PPC_TOC16", /* name */
1804 FALSE, /* partial_inplace */
1806 0xffff, /* dst_mask */
1807 FALSE), /* pcrel_offset */
1810 /* External 32-bit PPC structure for PRPSINFO. This structure is
1811 ABI-defined, thus we choose to use char arrays here in order to
1812 avoid dealing with different types in different architectures.
1814 The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1815 most non-PPC architectures use `short int'.
1817 This structure will ultimately be written in the corefile's note
1818 section, as the PRPSINFO. */
1820 struct elf_external_ppc_linux_prpsinfo32
1822 char pr_state; /* Numeric process state. */
1823 char pr_sname; /* Char for pr_state. */
1824 char pr_zomb; /* Zombie. */
1825 char pr_nice; /* Nice val. */
1826 char pr_flag[4]; /* Flags. */
1833 char pr_fname[16]; /* Filename of executable. */
1834 char pr_psargs[80]; /* Initial part of arg list. */
1837 /* Helper function to copy an elf_internal_linux_prpsinfo in host
1838 endian to an elf_external_ppc_linux_prpsinfo32 in target endian. */
1841 swap_ppc_linux_prpsinfo32_out (bfd *obfd,
1842 const struct elf_internal_linux_prpsinfo *from,
1843 struct elf_external_ppc_linux_prpsinfo32 *to)
1845 bfd_put_8 (obfd, from->pr_state, &to->pr_state);
1846 bfd_put_8 (obfd, from->pr_sname, &to->pr_sname);
1847 bfd_put_8 (obfd, from->pr_zomb, &to->pr_zomb);
1848 bfd_put_8 (obfd, from->pr_nice, &to->pr_nice);
1849 bfd_put_32 (obfd, from->pr_flag, to->pr_flag);
1850 bfd_put_32 (obfd, from->pr_uid, to->pr_uid);
1851 bfd_put_32 (obfd, from->pr_gid, to->pr_gid);
1852 bfd_put_32 (obfd, from->pr_pid, to->pr_pid);
1853 bfd_put_32 (obfd, from->pr_ppid, to->pr_ppid);
1854 bfd_put_32 (obfd, from->pr_pgrp, to->pr_pgrp);
1855 bfd_put_32 (obfd, from->pr_sid, to->pr_sid);
1856 strncpy (to->pr_fname, from->pr_fname, sizeof (to->pr_fname));
1857 strncpy (to->pr_psargs, from->pr_psargs, sizeof (to->pr_psargs));
1860 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1863 ppc_elf_howto_init (void)
1865 unsigned int i, type;
1868 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1871 type = ppc_elf_howto_raw[i].type;
1872 if (type >= (sizeof (ppc_elf_howto_table)
1873 / sizeof (ppc_elf_howto_table[0])))
1875 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1879 static reloc_howto_type *
1880 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1881 bfd_reloc_code_real_type code)
1883 enum elf_ppc_reloc_type r;
1885 /* Initialize howto table if not already done. */
1886 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1887 ppc_elf_howto_init ();
1894 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1895 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1896 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1897 case BFD_RELOC_PPC64_ADDR16_DS:
1898 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1899 case BFD_RELOC_PPC64_ADDR16_LO_DS:
1900 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1901 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1902 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1903 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1904 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1905 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1906 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1907 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1908 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1909 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1910 case BFD_RELOC_PPC64_GOT16_DS:
1911 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1912 case BFD_RELOC_PPC64_GOT16_LO_DS:
1913 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1914 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1915 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1916 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1917 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1918 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1919 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1920 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1921 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1922 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1923 case BFD_RELOC_PPC64_PLT16_LO_DS:
1924 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1925 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1926 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1927 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1928 case BFD_RELOC_PPC64_SECTOFF_DS:
1929 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1930 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1931 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1932 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1933 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1934 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1935 case BFD_RELOC_PPC64_TOC16_DS:
1936 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1937 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1938 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1939 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1940 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1941 case BFD_RELOC_PPC64_TPREL16_DS:
1942 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1943 case BFD_RELOC_PPC64_TPREL16_LO_DS:
1944 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1945 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1946 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1947 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1948 case BFD_RELOC_PPC64_DTPREL16_DS:
1949 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1950 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1951 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1952 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1953 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1954 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1955 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1956 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1957 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1958 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1959 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1960 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1961 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1962 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1963 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1964 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1965 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1966 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1967 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1968 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1969 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1970 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1971 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1972 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1973 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1974 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1975 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1976 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1977 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1978 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1979 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1980 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1981 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1982 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1983 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1984 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1985 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1986 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1987 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1988 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1989 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1990 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1991 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1992 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1993 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1994 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1995 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1996 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1997 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1998 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1999 r = R_PPC_VLE_SDAREL_LO16A;
2001 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
2002 r = R_PPC_VLE_SDAREL_LO16D;
2004 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
2005 r = R_PPC_VLE_SDAREL_HI16A;
2007 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
2008 r = R_PPC_VLE_SDAREL_HI16D;
2010 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
2011 r = R_PPC_VLE_SDAREL_HA16A;
2013 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
2014 r = R_PPC_VLE_SDAREL_HA16D;
2016 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
2017 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
2018 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
2019 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
2020 case BFD_RELOC_PPC_16DX_HA: r = R_PPC_16DX_HA; break;
2021 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break;
2022 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
2023 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
2026 return ppc_elf_howto_table[r];
2029 static reloc_howto_type *
2030 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2036 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2038 if (ppc_elf_howto_raw[i].name != NULL
2039 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2040 return &ppc_elf_howto_raw[i];
2045 /* Set the howto pointer for a PowerPC ELF reloc. */
2048 ppc_elf_info_to_howto (bfd *abfd,
2050 Elf_Internal_Rela *dst)
2052 unsigned int r_type;
2054 /* Initialize howto table if not already done. */
2055 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2056 ppc_elf_howto_init ();
2058 r_type = ELF32_R_TYPE (dst->r_info);
2059 if (r_type >= R_PPC_max)
2061 /* xgettext:c-format */
2062 _bfd_error_handler (_("%B: unrecognised PPC reloc number: %d"),
2064 bfd_set_error (bfd_error_bad_value);
2065 r_type = R_PPC_NONE;
2067 cache_ptr->howto = ppc_elf_howto_table[r_type];
2069 /* Just because the above assert didn't trigger doesn't mean that
2070 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2071 if (!cache_ptr->howto)
2073 /* xgettext:c-format */
2074 _bfd_error_handler (_("%B: invalid relocation type %d"),
2076 bfd_set_error (bfd_error_bad_value);
2078 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2082 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2084 static bfd_reloc_status_type
2085 ppc_elf_addr16_ha_reloc (bfd *abfd,
2086 arelent *reloc_entry,
2089 asection *input_section,
2091 char **error_message ATTRIBUTE_UNUSED)
2093 enum elf_ppc_reloc_type r_type;
2095 bfd_size_type octets;
2098 if (output_bfd != NULL)
2100 reloc_entry->address += input_section->output_offset;
2101 return bfd_reloc_ok;
2104 reloc_entry->addend += 0x8000;
2105 r_type = reloc_entry->howto->type;
2106 if (r_type != R_PPC_REL16DX_HA)
2107 return bfd_reloc_continue;
2110 if (!bfd_is_com_section (symbol->section))
2111 value = symbol->value;
2112 value += (reloc_entry->addend
2113 + symbol->section->output_offset
2114 + symbol->section->output_section->vma);
2115 value -= (reloc_entry->address
2116 + input_section->output_offset
2117 + input_section->output_section->vma);
2120 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2121 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2123 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2124 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2125 return bfd_reloc_ok;
2128 static bfd_reloc_status_type
2129 ppc_elf_unhandled_reloc (bfd *abfd,
2130 arelent *reloc_entry,
2133 asection *input_section,
2135 char **error_message)
2137 /* If this is a relocatable link (output_bfd test tells us), just
2138 call the generic function. Any adjustment will be done at final
2140 if (output_bfd != NULL)
2141 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2142 input_section, output_bfd, error_message);
2144 if (error_message != NULL)
2146 static char buf[60];
2147 sprintf (buf, _("generic linker can't handle %s"),
2148 reloc_entry->howto->name);
2149 *error_message = buf;
2151 return bfd_reloc_dangerous;
2154 /* Sections created by the linker. */
2156 typedef struct elf_linker_section
2158 /* Pointer to the bfd section. */
2162 /* Associated bss section name. */
2163 const char *bss_name;
2164 /* Associated symbol name. */
2165 const char *sym_name;
2166 /* Associated symbol. */
2167 struct elf_link_hash_entry *sym;
2168 } elf_linker_section_t;
2170 /* Linked list of allocated pointer entries. This hangs off of the
2171 symbol lists, and provides allows us to return different pointers,
2172 based on different addend's. */
2174 typedef struct elf_linker_section_pointers
2176 /* next allocated pointer for this symbol */
2177 struct elf_linker_section_pointers *next;
2178 /* offset of pointer from beginning of section */
2182 /* which linker section this is */
2183 elf_linker_section_t *lsect;
2184 } elf_linker_section_pointers_t;
2186 struct ppc_elf_obj_tdata
2188 struct elf_obj_tdata elf;
2190 /* A mapping from local symbols to offsets into the various linker
2191 sections added. This is index by the symbol index. */
2192 elf_linker_section_pointers_t **linker_section_pointers;
2194 /* Flags used to auto-detect plt type. */
2195 unsigned int makes_plt_call : 1;
2196 unsigned int has_rel16 : 1;
2199 #define ppc_elf_tdata(bfd) \
2200 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2202 #define elf_local_ptr_offsets(bfd) \
2203 (ppc_elf_tdata (bfd)->linker_section_pointers)
2205 #define is_ppc_elf(bfd) \
2206 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2207 && elf_object_id (bfd) == PPC32_ELF_DATA)
2209 /* Override the generic function because we store some extras. */
2212 ppc_elf_mkobject (bfd *abfd)
2214 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2218 /* When defaulting arch/mach, decode apuinfo to find a better match. */
2221 _bfd_elf_ppc_set_arch (bfd *abfd)
2223 unsigned long mach = 0;
2225 unsigned char *contents;
2227 if (abfd->arch_info->bits_per_word == 32
2228 && bfd_big_endian (abfd))
2231 for (s = abfd->sections; s != NULL; s = s->next)
2232 if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
2235 mach = bfd_mach_ppc_vle;
2240 s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2241 if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents))
2243 unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
2246 for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
2248 unsigned int val = bfd_get_32 (abfd, contents + i);
2251 case PPC_APUINFO_PMR:
2252 case PPC_APUINFO_RFMCI:
2254 mach = bfd_mach_ppc_titan;
2257 case PPC_APUINFO_ISEL:
2258 case PPC_APUINFO_CACHELCK:
2259 if (mach == bfd_mach_ppc_titan)
2260 mach = bfd_mach_ppc_e500mc;
2263 case PPC_APUINFO_SPE:
2264 case PPC_APUINFO_EFS:
2265 case PPC_APUINFO_BRLOCK:
2266 if (mach != bfd_mach_ppc_vle)
2267 mach = bfd_mach_ppc_e500;
2270 case PPC_APUINFO_VLE:
2271 mach = bfd_mach_ppc_vle;
2282 if (mach != 0 && mach != -1ul)
2284 const bfd_arch_info_type *arch;
2286 for (arch = abfd->arch_info->next; arch; arch = arch->next)
2287 if (arch->mach == mach)
2289 abfd->arch_info = arch;
2296 /* Fix bad default arch selected for a 32 bit input bfd when the
2297 default is 64 bit. Also select arch based on apuinfo. */
2300 ppc_elf_object_p (bfd *abfd)
2302 if (!abfd->arch_info->the_default)
2305 if (abfd->arch_info->bits_per_word == 64)
2307 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2309 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2311 /* Relies on arch after 64 bit default being 32 bit default. */
2312 abfd->arch_info = abfd->arch_info->next;
2313 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2316 return _bfd_elf_ppc_set_arch (abfd);
2319 /* Function to set whether a module needs the -mrelocatable bit set. */
2322 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2324 BFD_ASSERT (!elf_flags_init (abfd)
2325 || elf_elfheader (abfd)->e_flags == flags);
2327 elf_elfheader (abfd)->e_flags = flags;
2328 elf_flags_init (abfd) = TRUE;
2332 /* Support for core dump NOTE sections. */
2335 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2340 switch (note->descsz)
2345 case 268: /* Linux/PPC. */
2347 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2350 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2359 /* Make a ".reg/999" section. */
2360 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2361 size, note->descpos + offset);
2365 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2367 switch (note->descsz)
2372 case 128: /* Linux/PPC elf_prpsinfo. */
2373 elf_tdata (abfd)->core->pid
2374 = bfd_get_32 (abfd, note->descdata + 16);
2375 elf_tdata (abfd)->core->program
2376 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2377 elf_tdata (abfd)->core->command
2378 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2381 /* Note that for some reason, a spurious space is tacked
2382 onto the end of the args in some (at least one anyway)
2383 implementations, so strip it off if it exists. */
2386 char *command = elf_tdata (abfd)->core->command;
2387 int n = strlen (command);
2389 if (0 < n && command[n - 1] == ' ')
2390 command[n - 1] = '\0';
2397 elfcore_write_ppc_linux_prpsinfo32
2401 const struct elf_internal_linux_prpsinfo *prpsinfo)
2403 struct elf_external_ppc_linux_prpsinfo32 data;
2405 swap_ppc_linux_prpsinfo32_out (abfd, prpsinfo, &data);
2406 return elfcore_write_note (abfd, buf, bufsiz,
2407 "CORE", NT_PRPSINFO, &data, sizeof (data));
2411 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2423 va_start (ap, note_type);
2424 memset (data, 0, sizeof (data));
2425 strncpy (data + 32, va_arg (ap, const char *), 16);
2426 strncpy (data + 48, va_arg (ap, const char *), 80);
2428 return elfcore_write_note (abfd, buf, bufsiz,
2429 "CORE", note_type, data, sizeof (data));
2440 va_start (ap, note_type);
2441 memset (data, 0, 72);
2442 pid = va_arg (ap, long);
2443 bfd_put_32 (abfd, pid, data + 24);
2444 cursig = va_arg (ap, int);
2445 bfd_put_16 (abfd, cursig, data + 12);
2446 greg = va_arg (ap, const void *);
2447 memcpy (data + 72, greg, 192);
2448 memset (data + 264, 0, 4);
2450 return elfcore_write_note (abfd, buf, bufsiz,
2451 "CORE", note_type, data, sizeof (data));
2457 ppc_elf_lookup_section_flags (char *flag_name)
2460 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2466 /* Return address for Ith PLT stub in section PLT, for relocation REL
2467 or (bfd_vma) -1 if it should not be included. */
2470 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2471 const asection *plt ATTRIBUTE_UNUSED,
2474 return rel->address;
2477 /* Handle a PowerPC specific section when reading an object file. This
2478 is called when bfd_section_from_shdr finds a section with an unknown
2482 ppc_elf_section_from_shdr (bfd *abfd,
2483 Elf_Internal_Shdr *hdr,
2490 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2493 newsect = hdr->bfd_section;
2494 flags = bfd_get_section_flags (abfd, newsect);
2495 if (hdr->sh_flags & SHF_EXCLUDE)
2496 flags |= SEC_EXCLUDE;
2498 if (hdr->sh_type == SHT_ORDERED)
2499 flags |= SEC_SORT_ENTRIES;
2501 bfd_set_section_flags (abfd, newsect, flags);
2505 /* Set up any other section flags and such that may be necessary. */
2508 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2509 Elf_Internal_Shdr *shdr,
2512 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2513 shdr->sh_type = SHT_ORDERED;
2518 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2519 need to bump up the number of section headers. */
2522 ppc_elf_additional_program_headers (bfd *abfd,
2523 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2528 s = bfd_get_section_by_name (abfd, ".sbss2");
2529 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2532 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2533 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2539 /* Modify the segment map for VLE executables. */
2542 ppc_elf_modify_segment_map (bfd *abfd,
2543 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2545 struct elf_segment_map *m;
2547 /* At this point in the link, output sections have already been sorted by
2548 LMA and assigned to segments. All that is left to do is to ensure
2549 there is no mixing of VLE & non-VLE sections in a text segment.
2550 If we find that case, we split the segment.
2551 We maintain the original output section order. */
2553 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2555 struct elf_segment_map *n;
2558 unsigned int p_flags;
2560 if (m->p_type != PT_LOAD || m->count == 0)
2563 for (p_flags = PF_R, j = 0; j != m->count; ++j)
2565 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2567 if ((m->sections[j]->flags & SEC_CODE) != 0)
2570 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2571 p_flags |= PF_PPC_VLE;
2576 while (++j != m->count)
2578 unsigned int p_flags1 = PF_R;
2580 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2582 if ((m->sections[j]->flags & SEC_CODE) != 0)
2585 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2586 p_flags1 |= PF_PPC_VLE;
2587 if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0)
2590 p_flags |= p_flags1;
2592 /* If we're splitting a segment which originally contained rw
2593 sections then those sections might now only be in one of the
2594 two parts. So always set p_flags if splitting, even if we
2595 are being called for objcopy with p_flags_valid set. */
2596 if (j != m->count || !m->p_flags_valid)
2598 m->p_flags_valid = 1;
2599 m->p_flags = p_flags;
2604 /* Sections 0..j-1 stay in this (current) segment,
2605 the remainder are put in a new segment.
2606 The scan resumes with the new segment. */
2608 amt = sizeof (struct elf_segment_map);
2609 amt += (m->count - j - 1) * sizeof (asection *);
2610 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2614 n->p_type = PT_LOAD;
2615 n->count = m->count - j;
2616 for (k = 0; k < n->count; ++k)
2617 n->sections[k] = m->sections[j + k];
2619 m->p_size_valid = 0;
2627 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2628 .PPC.EMB.sbss0 a normal section, and not a bss section so
2629 that the linker doesn't crater when trying to make more than
2632 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2634 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2635 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2636 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2637 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2638 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2639 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2640 { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2641 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2642 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2643 { NULL, 0, 0, 0, 0 }
2646 /* This is what we want for new plt/got. */
2647 static struct bfd_elf_special_section ppc_alt_plt =
2648 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2650 static const struct bfd_elf_special_section *
2651 ppc_elf_get_sec_type_attr (bfd *abfd, asection *sec)
2653 const struct bfd_elf_special_section *ssect;
2655 /* See if this is one of the special sections. */
2656 if (sec->name == NULL)
2659 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2663 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2664 ssect = &ppc_alt_plt;
2668 return _bfd_elf_get_sec_type_attr (abfd, sec);
2671 /* Very simple linked list structure for recording apuinfo values. */
2672 typedef struct apuinfo_list
2674 struct apuinfo_list *next;
2675 unsigned long value;
2679 static apuinfo_list *head;
2680 static bfd_boolean apuinfo_set;
2683 apuinfo_list_init (void)
2686 apuinfo_set = FALSE;
2690 apuinfo_list_add (unsigned long value)
2692 apuinfo_list *entry = head;
2694 while (entry != NULL)
2696 if (entry->value == value)
2698 entry = entry->next;
2701 entry = bfd_malloc (sizeof (* entry));
2705 entry->value = value;
2711 apuinfo_list_length (void)
2713 apuinfo_list *entry;
2714 unsigned long count;
2716 for (entry = head, count = 0;
2718 entry = entry->next)
2724 static inline unsigned long
2725 apuinfo_list_element (unsigned long number)
2727 apuinfo_list * entry;
2731 entry = entry->next)
2734 return entry ? entry->value : 0;
2738 apuinfo_list_finish (void)
2740 apuinfo_list *entry;
2742 for (entry = head; entry;)
2744 apuinfo_list *next = entry->next;
2752 /* Scan the input BFDs and create a linked list of
2753 the APUinfo values that will need to be emitted. */
2756 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2760 char *buffer = NULL;
2761 bfd_size_type largest_input_size = 0;
2763 unsigned long length;
2764 const char *error_message = NULL;
2766 if (link_info == NULL)
2769 apuinfo_list_init ();
2771 /* Read in the input sections contents. */
2772 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
2774 unsigned long datum;
2776 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2780 /* xgettext:c-format */
2781 error_message = _("corrupt %s section in %B");
2782 length = asec->size;
2787 if (largest_input_size < asec->size)
2791 largest_input_size = asec->size;
2792 buffer = bfd_malloc (largest_input_size);
2797 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2798 || (bfd_bread (buffer, length, ibfd) != length))
2800 /* xgettext:c-format */
2801 error_message = _("unable to read in %s section from %B");
2805 /* Verify the contents of the header. Note - we have to
2806 extract the values this way in order to allow for a
2807 host whose endian-ness is different from the target. */
2808 datum = bfd_get_32 (ibfd, buffer);
2809 if (datum != sizeof APUINFO_LABEL)
2812 datum = bfd_get_32 (ibfd, buffer + 8);
2816 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2819 /* Get the number of bytes used for apuinfo entries. */
2820 datum = bfd_get_32 (ibfd, buffer + 4);
2821 if (datum + 20 != length)
2824 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2825 for (i = 0; i < datum; i += 4)
2826 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2829 error_message = NULL;
2833 /* Compute the size of the output section. */
2834 unsigned num_entries = apuinfo_list_length ();
2836 /* Set the output section size, if it exists. */
2837 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2839 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2842 /* xgettext:c-format */
2843 error_message = _("warning: unable to set size of %s section in %B");
2852 _bfd_error_handler (error_message, APUINFO_SECTION_NAME, ibfd);
2855 /* Prevent the output section from accumulating the input sections'
2856 contents. We have already stored this in our linked list structure. */
2859 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2860 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2862 bfd_byte *contents ATTRIBUTE_UNUSED)
2864 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2867 /* Finally we can generate the output section. */
2870 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2875 unsigned num_entries;
2876 bfd_size_type length;
2878 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2885 length = asec->size;
2889 buffer = bfd_malloc (length);
2893 (_("failed to allocate space for new APUinfo section."));
2897 /* Create the apuinfo header. */
2898 num_entries = apuinfo_list_length ();
2899 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2900 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2901 bfd_put_32 (abfd, 0x2, buffer + 8);
2902 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2905 for (i = 0; i < num_entries; i++)
2907 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2911 if (length != asec->size)
2912 _bfd_error_handler (_("failed to compute new APUinfo section."));
2914 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2915 _bfd_error_handler (_("failed to install new APUinfo section."));
2919 apuinfo_list_finish ();
2923 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2925 bfd_byte buf[GLINK_ENTRY_SIZE];
2927 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2930 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2931 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2932 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2933 && bfd_get_32 (abfd, buf + 12) == BCTR);
2937 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2939 bfd_vma vma = *(bfd_vma *) ptr;
2940 return ((section->flags & SEC_ALLOC) != 0
2941 && section->vma <= vma
2942 && vma < section->vma + section->size);
2946 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2947 long dynsymcount, asymbol **dynsyms,
2950 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2951 asection *plt, *relplt, *dynamic, *glink;
2952 bfd_vma glink_vma = 0;
2953 bfd_vma resolv_vma = 0;
2964 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2967 if (dynsymcount <= 0)
2970 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2974 plt = bfd_get_section_by_name (abfd, ".plt");
2978 /* Call common code to handle old-style executable PLTs. */
2979 if (elf_section_flags (plt) & SHF_EXECINSTR)
2980 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2981 dynsymcount, dynsyms, ret);
2983 /* If this object was prelinked, the prelinker stored the address
2984 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2985 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2986 if (dynamic != NULL)
2988 bfd_byte *dynbuf, *extdyn, *extdynend;
2990 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2992 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2995 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2996 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2999 extdynend = extdyn + dynamic->size;
3000 for (; extdyn < extdynend; extdyn += extdynsize)
3002 Elf_Internal_Dyn dyn;
3003 (*swap_dyn_in) (abfd, extdyn, &dyn);
3005 if (dyn.d_tag == DT_NULL)
3008 if (dyn.d_tag == DT_PPC_GOT)
3010 unsigned int g_o_t = dyn.d_un.d_val;
3011 asection *got = bfd_get_section_by_name (abfd, ".got");
3013 && bfd_get_section_contents (abfd, got, buf,
3014 g_o_t - got->vma + 4, 4))
3015 glink_vma = bfd_get_32 (abfd, buf);
3022 /* Otherwise we read the first plt entry. */
3025 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
3026 glink_vma = bfd_get_32 (abfd, buf);
3032 /* The .glink section usually does not survive the final
3033 link; search for the section (usually .text) where the
3034 glink stubs now reside. */
3035 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
3039 /* Determine glink PLT resolver by reading the relative branch
3040 from the first glink stub. */
3041 if (bfd_get_section_contents (abfd, glink, buf,
3042 glink_vma - glink->vma, 4))
3044 unsigned int insn = bfd_get_32 (abfd, buf);
3046 /* The first glink stub may either branch to the resolver ... */
3048 if ((insn & ~0x3fffffc) == 0)
3049 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3051 /* ... or fall through a bunch of NOPs. */
3052 else if ((insn ^ B ^ NOP) == 0)
3054 bfd_get_section_contents (abfd, glink, buf,
3055 glink_vma - glink->vma + i, 4);
3057 if (bfd_get_32 (abfd, buf) != NOP)
3059 resolv_vma = glink_vma + i;
3064 count = relplt->size / sizeof (Elf32_External_Rela);
3065 /* If the stubs are those for -shared/-pie then we might have
3066 multiple stubs for each plt entry. If that is the case then
3067 there is no way to associate stubs with their plt entries short
3068 of figuring out the GOT pointer value used in the stub. */
3069 if (!is_nonpic_glink_stub (abfd, glink,
3070 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
3073 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3074 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3077 size = count * sizeof (asymbol);
3078 p = relplt->relocation;
3079 for (i = 0; i < count; i++, p++)
3081 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3083 size += sizeof ("+0x") - 1 + 8;
3086 size += sizeof (asymbol) + sizeof ("__glink");
3089 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3091 s = *ret = bfd_malloc (size);
3095 stub_vma = glink_vma;
3096 names = (char *) (s + count + 1 + (resolv_vma != 0));
3097 p = relplt->relocation + count - 1;
3098 for (i = 0; i < count; i++)
3102 *s = **p->sym_ptr_ptr;
3103 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3104 we are defining a symbol, ensure one of them is set. */
3105 if ((s->flags & BSF_LOCAL) == 0)
3106 s->flags |= BSF_GLOBAL;
3107 s->flags |= BSF_SYNTHETIC;
3110 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3112 s->value = stub_vma - glink->vma;
3115 len = strlen ((*p->sym_ptr_ptr)->name);
3116 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3120 memcpy (names, "+0x", sizeof ("+0x") - 1);
3121 names += sizeof ("+0x") - 1;
3122 bfd_sprintf_vma (abfd, names, p->addend);
3123 names += strlen (names);
3125 memcpy (names, "@plt", sizeof ("@plt"));
3126 names += sizeof ("@plt");
3131 /* Add a symbol at the start of the glink branch table. */
3132 memset (s, 0, sizeof *s);
3134 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3136 s->value = glink_vma - glink->vma;
3138 memcpy (names, "__glink", sizeof ("__glink"));
3139 names += sizeof ("__glink");
3145 /* Add a symbol for the glink PLT resolver. */
3146 memset (s, 0, sizeof *s);
3148 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3150 s->value = resolv_vma - glink->vma;
3152 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3153 names += sizeof ("__glink_PLTresolve");
3161 /* The following functions are specific to the ELF linker, while
3162 functions above are used generally. They appear in this file more
3163 or less in the order in which they are called. eg.
3164 ppc_elf_check_relocs is called early in the link process,
3165 ppc_elf_finish_dynamic_sections is one of the last functions
3168 /* Track PLT entries needed for a given symbol. We might need more
3169 than one glink entry per symbol when generating a pic binary. */
3172 struct plt_entry *next;
3174 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3175 This field stores the offset into .got2 used to initialise the
3176 GOT pointer reg. It will always be at least 32768. (Current
3177 gcc always uses an offset of 32768, but ld -r will pack .got2
3178 sections together resulting in larger offsets). */
3181 /* The .got2 section. */
3184 /* PLT refcount or offset. */
3187 bfd_signed_vma refcount;
3191 /* .glink stub offset. */
3192 bfd_vma glink_offset;
3195 /* Of those relocs that might be copied as dynamic relocs, this function
3196 selects those that must be copied when linking a shared library,
3197 even when the symbol is local. */
3200 must_be_dyn_reloc (struct bfd_link_info *info,
3201 enum elf_ppc_reloc_type r_type)
3210 case R_PPC_REL14_BRTAKEN:
3211 case R_PPC_REL14_BRNTAKEN:
3217 case R_PPC_TPREL16_LO:
3218 case R_PPC_TPREL16_HI:
3219 case R_PPC_TPREL16_HA:
3220 return !bfd_link_executable (info);
3224 /* Whether an undefined weak symbol should resolve to its link-time
3225 value, even in PIC or PIE objects. */
3226 #define UNDEFWEAK_NO_DYNAMIC_RELOC(INFO, H) \
3227 ((H)->root.type == bfd_link_hash_undefweak \
3228 && (ELF_ST_VISIBILITY ((H)->other) != STV_DEFAULT \
3229 || (INFO)->dynamic_undefined_weak == 0))
3231 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3232 copying dynamic variables from a shared lib into an app's dynbss
3233 section, and instead use a dynamic relocation to point into the
3235 #define ELIMINATE_COPY_RELOCS 1
3237 /* Used to track dynamic relocations for local symbols. */
3238 struct ppc_dyn_relocs
3240 struct ppc_dyn_relocs *next;
3242 /* The input section of the reloc. */
3245 /* Total number of relocs copied for the input section. */
3246 unsigned int count : 31;
3248 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3249 unsigned int ifunc : 1;
3252 /* PPC ELF linker hash entry. */
3254 struct ppc_elf_link_hash_entry
3256 struct elf_link_hash_entry elf;
3258 /* If this symbol is used in the linker created sections, the processor
3259 specific backend uses this field to map the field into the offset
3260 from the beginning of the section. */
3261 elf_linker_section_pointers_t *linker_section_pointer;
3263 /* Track dynamic relocs copied for this symbol. */
3264 struct elf_dyn_relocs *dyn_relocs;
3266 /* Contexts in which symbol is used in the GOT (or TOC).
3267 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3268 corresponding relocs are encountered during check_relocs.
3269 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3270 indicate the corresponding GOT entry type is not needed. */
3271 #define TLS_GD 1 /* GD reloc. */
3272 #define TLS_LD 2 /* LD reloc. */
3273 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3274 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3275 #define TLS_TLS 16 /* Any TLS reloc. */
3276 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3277 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3280 /* Nonzero if we have seen a small data relocation referring to this
3282 unsigned char has_sda_refs : 1;
3284 /* Flag use of given relocations. */
3285 unsigned char has_addr16_ha : 1;
3286 unsigned char has_addr16_lo : 1;
3289 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3291 /* PPC ELF linker hash table. */
3293 struct ppc_elf_link_hash_table
3295 struct elf_link_hash_table elf;
3297 /* Various options passed from the linker. */
3298 struct ppc_elf_params *params;
3300 /* Short-cuts to get to dynamic linker sections. */
3304 elf_linker_section_t sdata[2];
3306 asection *glink_eh_frame;
3308 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3311 /* Shortcut to __tls_get_addr. */
3312 struct elf_link_hash_entry *tls_get_addr;
3314 /* The bfd that forced an old-style PLT. */
3317 /* TLS local dynamic got entry handling. */
3319 bfd_signed_vma refcount;
3323 /* Offset of branch table to PltResolve function in glink. */
3324 bfd_vma glink_pltresolve;
3326 /* Size of reserved GOT entries. */
3327 unsigned int got_header_size;
3328 /* Non-zero if allocating the header left a gap. */
3329 unsigned int got_gap;
3331 /* The type of PLT we have chosen to use. */
3332 enum ppc_elf_plt_type plt_type;
3334 /* True if the target system is VxWorks. */
3335 unsigned int is_vxworks:1;
3337 /* Whether there exist local gnu indirect function resolvers,
3338 referenced by dynamic relocations. */
3339 unsigned int local_ifunc_resolver:1;
3340 unsigned int maybe_local_ifunc_resolver:1;
3342 /* The size of PLT entries. */
3344 /* The distance between adjacent PLT slots. */
3346 /* The size of the first PLT entry. */
3347 int plt_initial_entry_size;
3349 /* Small local sym cache. */
3350 struct sym_cache sym_cache;
3353 /* Rename some of the generic section flags to better document how they
3354 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3356 /* Nonzero if this section has TLS related relocations. */
3357 #define has_tls_reloc sec_flg0
3359 /* Nonzero if this section has a call to __tls_get_addr. */
3360 #define has_tls_get_addr_call sec_flg1
3362 /* Get the PPC ELF linker hash table from a link_info structure. */
3364 #define ppc_elf_hash_table(p) \
3365 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3366 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3368 /* Create an entry in a PPC ELF linker hash table. */
3370 static struct bfd_hash_entry *
3371 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3372 struct bfd_hash_table *table,
3375 /* Allocate the structure if it has not already been allocated by a
3379 entry = bfd_hash_allocate (table,
3380 sizeof (struct ppc_elf_link_hash_entry));
3385 /* Call the allocation method of the superclass. */
3386 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3389 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3390 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3391 ppc_elf_hash_entry (entry)->tls_mask = 0;
3392 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3398 /* Create a PPC ELF linker hash table. */
3400 static struct bfd_link_hash_table *
3401 ppc_elf_link_hash_table_create (bfd *abfd)
3403 struct ppc_elf_link_hash_table *ret;
3404 static struct ppc_elf_params default_params
3405 = { PLT_OLD, 0, 1, 0, 0, 12, 0, 0, 0 };
3407 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3411 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3412 ppc_elf_link_hash_newfunc,
3413 sizeof (struct ppc_elf_link_hash_entry),
3420 ret->elf.init_plt_refcount.refcount = 0;
3421 ret->elf.init_plt_refcount.glist = NULL;
3422 ret->elf.init_plt_offset.offset = 0;
3423 ret->elf.init_plt_offset.glist = NULL;
3425 ret->params = &default_params;
3427 ret->sdata[0].name = ".sdata";
3428 ret->sdata[0].sym_name = "_SDA_BASE_";
3429 ret->sdata[0].bss_name = ".sbss";
3431 ret->sdata[1].name = ".sdata2";
3432 ret->sdata[1].sym_name = "_SDA2_BASE_";
3433 ret->sdata[1].bss_name = ".sbss2";
3435 ret->plt_entry_size = 12;
3436 ret->plt_slot_size = 8;
3437 ret->plt_initial_entry_size = 72;
3439 return &ret->elf.root;
3442 /* Hook linker params into hash table. */
3445 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3447 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3450 htab->params = params;
3451 params->pagesize_p2 = bfd_log2 (params->pagesize);
3454 /* Create .got and the related sections. */
3457 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3459 struct ppc_elf_link_hash_table *htab;
3461 if (!_bfd_elf_create_got_section (abfd, info))
3464 htab = ppc_elf_hash_table (info);
3465 if (!htab->is_vxworks)
3467 /* The powerpc .got has a blrl instruction in it. Mark it
3469 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3470 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3471 if (!bfd_set_section_flags (abfd, htab->elf.sgot, flags))
3478 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3479 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3480 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3483 ppc_elf_create_linker_section (bfd *abfd,
3484 struct bfd_link_info *info,
3486 elf_linker_section_t *lsect)
3490 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3491 | SEC_LINKER_CREATED);
3493 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3498 /* Define the sym on the first section of this name. */
3499 s = bfd_get_section_by_name (abfd, lsect->name);
3501 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3502 if (lsect->sym == NULL)
3504 lsect->sym->root.u.def.value = 0x8000;
3509 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3511 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3515 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3516 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3517 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3520 || !bfd_set_section_alignment (abfd, s,
3521 htab->params->ppc476_workaround ? 6 : 4))
3524 if (!info->no_ld_generated_unwind_info)
3526 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3527 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3528 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3529 htab->glink_eh_frame = s;
3531 || !bfd_set_section_alignment (abfd, s, 2))
3535 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3536 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3539 || !bfd_set_section_alignment (abfd, s, 4))
3542 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3543 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3544 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3545 htab->elf.irelplt = s;
3547 || ! bfd_set_section_alignment (abfd, s, 2))
3550 if (!ppc_elf_create_linker_section (abfd, info, 0,
3554 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3561 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3562 to output sections (just like _bfd_elf_create_dynamic_sections has
3563 to create .dynbss and .rela.bss). */
3566 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3568 struct ppc_elf_link_hash_table *htab;
3572 htab = ppc_elf_hash_table (info);
3574 if (htab->elf.sgot == NULL
3575 && !ppc_elf_create_got (abfd, info))
3578 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3581 if (htab->glink == NULL
3582 && !ppc_elf_create_glink (abfd, info))
3585 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3586 SEC_ALLOC | SEC_LINKER_CREATED);
3591 if (! bfd_link_pic (info))
3593 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3594 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3595 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3598 || ! bfd_set_section_alignment (abfd, s, 2))
3602 if (htab->is_vxworks
3603 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3607 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3608 if (htab->plt_type == PLT_VXWORKS)
3609 /* The VxWorks PLT is a loaded section with contents. */
3610 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3611 return bfd_set_section_flags (abfd, s, flags);
3614 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3617 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3618 struct elf_link_hash_entry *dir,
3619 struct elf_link_hash_entry *ind)
3621 struct ppc_elf_link_hash_entry *edir, *eind;
3623 edir = (struct ppc_elf_link_hash_entry *) dir;
3624 eind = (struct ppc_elf_link_hash_entry *) ind;
3626 edir->tls_mask |= eind->tls_mask;
3627 edir->has_sda_refs |= eind->has_sda_refs;
3629 /* If called to transfer flags for a weakdef during processing
3630 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3631 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3632 if (!(ELIMINATE_COPY_RELOCS
3633 && eind->elf.root.type != bfd_link_hash_indirect
3634 && edir->elf.dynamic_adjusted))
3635 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3637 if (edir->elf.versioned != versioned_hidden)
3638 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3639 edir->elf.ref_regular |= eind->elf.ref_regular;
3640 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3641 edir->elf.needs_plt |= eind->elf.needs_plt;
3642 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3644 if (eind->dyn_relocs != NULL)
3646 if (edir->dyn_relocs != NULL)
3648 struct elf_dyn_relocs **pp;
3649 struct elf_dyn_relocs *p;
3651 /* Add reloc counts against the indirect sym to the direct sym
3652 list. Merge any entries against the same section. */
3653 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3655 struct elf_dyn_relocs *q;
3657 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3658 if (q->sec == p->sec)
3660 q->pc_count += p->pc_count;
3661 q->count += p->count;
3668 *pp = edir->dyn_relocs;
3671 edir->dyn_relocs = eind->dyn_relocs;
3672 eind->dyn_relocs = NULL;
3675 /* If we were called to copy over info for a weak sym, that's all.
3676 You might think dyn_relocs need not be copied over; After all,
3677 both syms will be dynamic or both non-dynamic so we're just
3678 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3679 code in ppc_elf_adjust_dynamic_symbol needs to check for
3680 dyn_relocs in read-only sections, and it does so on what is the
3682 if (eind->elf.root.type != bfd_link_hash_indirect)
3685 /* Copy over the GOT refcount entries that we may have already seen to
3686 the symbol which just became indirect. */
3687 edir->elf.got.refcount += eind->elf.got.refcount;
3688 eind->elf.got.refcount = 0;
3690 /* And plt entries. */
3691 if (eind->elf.plt.plist != NULL)
3693 if (edir->elf.plt.plist != NULL)
3695 struct plt_entry **entp;
3696 struct plt_entry *ent;
3698 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3700 struct plt_entry *dent;
3702 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3703 if (dent->sec == ent->sec && dent->addend == ent->addend)
3705 dent->plt.refcount += ent->plt.refcount;
3712 *entp = edir->elf.plt.plist;
3715 edir->elf.plt.plist = eind->elf.plt.plist;
3716 eind->elf.plt.plist = NULL;
3719 if (eind->elf.dynindx != -1)
3721 if (edir->elf.dynindx != -1)
3722 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3723 edir->elf.dynstr_index);
3724 edir->elf.dynindx = eind->elf.dynindx;
3725 edir->elf.dynstr_index = eind->elf.dynstr_index;
3726 eind->elf.dynindx = -1;
3727 eind->elf.dynstr_index = 0;
3731 /* Hook called by the linker routine which adds symbols from an object
3732 file. We use it to put .comm items in .sbss, and not .bss. */
3735 ppc_elf_add_symbol_hook (bfd *abfd,
3736 struct bfd_link_info *info,
3737 Elf_Internal_Sym *sym,
3738 const char **namep ATTRIBUTE_UNUSED,
3739 flagword *flagsp ATTRIBUTE_UNUSED,
3743 if (sym->st_shndx == SHN_COMMON
3744 && !bfd_link_relocatable (info)
3745 && is_ppc_elf (info->output_bfd)
3746 && sym->st_size <= elf_gp_size (abfd))
3748 /* Common symbols less than or equal to -G nn bytes are automatically
3750 struct ppc_elf_link_hash_table *htab;
3752 htab = ppc_elf_hash_table (info);
3753 if (htab->sbss == NULL)
3755 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3757 if (!htab->elf.dynobj)
3758 htab->elf.dynobj = abfd;
3760 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3763 if (htab->sbss == NULL)
3768 *valp = sym->st_size;
3771 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3772 && (abfd->flags & DYNAMIC) == 0
3773 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3774 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
3779 /* Find a linker generated pointer with a given addend and type. */
3781 static elf_linker_section_pointers_t *
3782 elf_find_pointer_linker_section
3783 (elf_linker_section_pointers_t *linker_pointers,
3785 elf_linker_section_t *lsect)
3787 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3788 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3789 return linker_pointers;
3794 /* Allocate a pointer to live in a linker created section. */
3797 elf_allocate_pointer_linker_section (bfd *abfd,
3798 elf_linker_section_t *lsect,
3799 struct elf_link_hash_entry *h,
3800 const Elf_Internal_Rela *rel)
3802 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3803 elf_linker_section_pointers_t *linker_section_ptr;
3804 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3807 BFD_ASSERT (lsect != NULL);
3809 /* Is this a global symbol? */
3812 struct ppc_elf_link_hash_entry *eh;
3814 /* Has this symbol already been allocated? If so, our work is done. */
3815 eh = (struct ppc_elf_link_hash_entry *) h;
3816 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3821 ptr_linker_section_ptr = &eh->linker_section_pointer;
3825 BFD_ASSERT (is_ppc_elf (abfd));
3827 /* Allocation of a pointer to a local symbol. */
3828 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3830 /* Allocate a table to hold the local symbols if first time. */
3833 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3836 amt *= sizeof (elf_linker_section_pointers_t *);
3837 ptr = bfd_zalloc (abfd, amt);
3842 elf_local_ptr_offsets (abfd) = ptr;
3845 /* Has this symbol already been allocated? If so, our work is done. */
3846 if (elf_find_pointer_linker_section (ptr[r_symndx],
3851 ptr_linker_section_ptr = &ptr[r_symndx];
3854 /* Allocate space for a pointer in the linker section, and allocate
3855 a new pointer record from internal memory. */
3856 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3857 amt = sizeof (elf_linker_section_pointers_t);
3858 linker_section_ptr = bfd_alloc (abfd, amt);
3860 if (!linker_section_ptr)
3863 linker_section_ptr->next = *ptr_linker_section_ptr;
3864 linker_section_ptr->addend = rel->r_addend;
3865 linker_section_ptr->lsect = lsect;
3866 *ptr_linker_section_ptr = linker_section_ptr;
3868 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3870 linker_section_ptr->offset = lsect->section->size;
3871 lsect->section->size += 4;
3875 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3876 lsect->name, (long) linker_section_ptr->offset,
3877 (long) lsect->section->size);
3883 static struct plt_entry **
3884 update_local_sym_info (bfd *abfd,
3885 Elf_Internal_Shdr *symtab_hdr,
3886 unsigned long r_symndx,
3889 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3890 struct plt_entry **local_plt;
3891 char *local_got_tls_masks;
3893 if (local_got_refcounts == NULL)
3895 bfd_size_type size = symtab_hdr->sh_info;
3897 size *= (sizeof (*local_got_refcounts)
3898 + sizeof (*local_plt)
3899 + sizeof (*local_got_tls_masks));
3900 local_got_refcounts = bfd_zalloc (abfd, size);
3901 if (local_got_refcounts == NULL)
3903 elf_local_got_refcounts (abfd) = local_got_refcounts;
3906 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3907 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3908 local_got_tls_masks[r_symndx] |= tls_type;
3909 if (tls_type != PLT_IFUNC)
3910 local_got_refcounts[r_symndx] += 1;
3911 return local_plt + r_symndx;
3915 update_plt_info (bfd *abfd, struct plt_entry **plist,
3916 asection *sec, bfd_vma addend)
3918 struct plt_entry *ent;
3922 for (ent = *plist; ent != NULL; ent = ent->next)
3923 if (ent->sec == sec && ent->addend == addend)
3927 bfd_size_type amt = sizeof (*ent);
3928 ent = bfd_alloc (abfd, amt);
3933 ent->addend = addend;
3934 ent->plt.refcount = 0;
3937 ent->plt.refcount += 1;
3941 static struct plt_entry *
3942 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3944 struct plt_entry *ent;
3948 for (ent = *plist; ent != NULL; ent = ent->next)
3949 if (ent->sec == sec && ent->addend == addend)
3955 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3957 return (r_type == R_PPC_PLTREL24
3958 || r_type == R_PPC_LOCAL24PC
3959 || r_type == R_PPC_REL24
3960 || r_type == R_PPC_REL14
3961 || r_type == R_PPC_REL14_BRTAKEN
3962 || r_type == R_PPC_REL14_BRNTAKEN
3963 || r_type == R_PPC_ADDR24
3964 || r_type == R_PPC_ADDR14
3965 || r_type == R_PPC_ADDR14_BRTAKEN
3966 || r_type == R_PPC_ADDR14_BRNTAKEN
3967 || r_type == R_PPC_VLE_REL24);
3971 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3974 /* xgettext:c-format */
3975 (_("%B: relocation %s cannot be used when making a shared object"),
3977 ppc_elf_howto_table[r_type]->name);
3978 bfd_set_error (bfd_error_bad_value);
3981 /* Look through the relocs for a section during the first phase, and
3982 allocate space in the global offset table or procedure linkage
3986 ppc_elf_check_relocs (bfd *abfd,
3987 struct bfd_link_info *info,
3989 const Elf_Internal_Rela *relocs)
3991 struct ppc_elf_link_hash_table *htab;
3992 Elf_Internal_Shdr *symtab_hdr;
3993 struct elf_link_hash_entry **sym_hashes;
3994 const Elf_Internal_Rela *rel;
3995 const Elf_Internal_Rela *rel_end;
3996 asection *got2, *sreloc;
3997 struct elf_link_hash_entry *tga;
3999 if (bfd_link_relocatable (info))
4002 /* Don't do anything special with non-loaded, non-alloced sections.
4003 In particular, any relocs in such sections should not affect GOT
4004 and PLT reference counting (ie. we don't allow them to create GOT
4005 or PLT entries), there's no possibility or desire to optimize TLS
4006 relocs, and there's not much point in propagating relocs to shared
4007 libs that the dynamic linker won't relocate. */
4008 if ((sec->flags & SEC_ALLOC) == 0)
4012 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
4016 BFD_ASSERT (is_ppc_elf (abfd));
4018 /* Initialize howto table if not already done. */
4019 if (!ppc_elf_howto_table[R_PPC_ADDR32])
4020 ppc_elf_howto_init ();
4022 htab = ppc_elf_hash_table (info);
4023 if (htab->glink == NULL)
4025 if (htab->elf.dynobj == NULL)
4026 htab->elf.dynobj = abfd;
4027 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
4030 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4031 FALSE, FALSE, TRUE);
4032 symtab_hdr = &elf_symtab_hdr (abfd);
4033 sym_hashes = elf_sym_hashes (abfd);
4034 got2 = bfd_get_section_by_name (abfd, ".got2");
4037 rel_end = relocs + sec->reloc_count;
4038 for (rel = relocs; rel < rel_end; rel++)
4040 unsigned long r_symndx;
4041 enum elf_ppc_reloc_type r_type;
4042 struct elf_link_hash_entry *h;
4044 struct plt_entry **ifunc;
4046 r_symndx = ELF32_R_SYM (rel->r_info);
4047 if (r_symndx < symtab_hdr->sh_info)
4051 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4052 while (h->root.type == bfd_link_hash_indirect
4053 || h->root.type == bfd_link_hash_warning)
4054 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4056 /* PR15323, ref flags aren't set for references in the same
4058 h->root.non_ir_ref_regular = 1;
4061 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4062 This shows up in particular in an R_PPC_ADDR32 in the eabi
4065 && htab->elf.sgot == NULL
4066 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4068 if (htab->elf.dynobj == NULL)
4069 htab->elf.dynobj = abfd;
4070 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4072 BFD_ASSERT (h == htab->elf.hgot);
4076 r_type = ELF32_R_TYPE (rel->r_info);
4078 if (h == NULL && !htab->is_vxworks)
4080 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4085 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4087 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4088 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4093 /* STT_GNU_IFUNC symbols must have a PLT entry;
4094 In a non-pie executable even when there are
4096 if (!bfd_link_pic (info)
4097 || is_branch_reloc (r_type))
4100 if (r_type == R_PPC_PLTREL24)
4102 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4103 if (bfd_link_pic (info))
4104 addend = rel->r_addend;
4106 if (!update_plt_info (abfd, ifunc, got2, addend))
4112 if (!htab->is_vxworks
4113 && is_branch_reloc (r_type)
4118 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4119 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4120 /* We have a new-style __tls_get_addr call with a marker
4124 /* Mark this section as having an old-style call. */
4125 sec->has_tls_get_addr_call = 1;
4132 /* These special tls relocs tie a call to __tls_get_addr with
4133 its parameter symbol. */
4136 case R_PPC_GOT_TLSLD16:
4137 case R_PPC_GOT_TLSLD16_LO:
4138 case R_PPC_GOT_TLSLD16_HI:
4139 case R_PPC_GOT_TLSLD16_HA:
4140 tls_type = TLS_TLS | TLS_LD;
4143 case R_PPC_GOT_TLSGD16:
4144 case R_PPC_GOT_TLSGD16_LO:
4145 case R_PPC_GOT_TLSGD16_HI:
4146 case R_PPC_GOT_TLSGD16_HA:
4147 tls_type = TLS_TLS | TLS_GD;
4150 case R_PPC_GOT_TPREL16:
4151 case R_PPC_GOT_TPREL16_LO:
4152 case R_PPC_GOT_TPREL16_HI:
4153 case R_PPC_GOT_TPREL16_HA:
4154 if (bfd_link_pic (info))
4155 info->flags |= DF_STATIC_TLS;
4156 tls_type = TLS_TLS | TLS_TPREL;
4159 case R_PPC_GOT_DTPREL16:
4160 case R_PPC_GOT_DTPREL16_LO:
4161 case R_PPC_GOT_DTPREL16_HI:
4162 case R_PPC_GOT_DTPREL16_HA:
4163 tls_type = TLS_TLS | TLS_DTPREL;
4165 sec->has_tls_reloc = 1;
4168 /* GOT16 relocations */
4170 case R_PPC_GOT16_LO:
4171 case R_PPC_GOT16_HI:
4172 case R_PPC_GOT16_HA:
4173 /* This symbol requires a global offset table entry. */
4174 if (htab->elf.sgot == NULL)
4176 if (htab->elf.dynobj == NULL)
4177 htab->elf.dynobj = abfd;
4178 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4183 h->got.refcount += 1;
4184 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4187 /* This is a global offset table entry for a local symbol. */
4188 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4191 /* We may also need a plt entry if the symbol turns out to be
4193 if (h != NULL && !bfd_link_pic (info))
4195 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4200 /* Indirect .sdata relocation. */
4201 case R_PPC_EMB_SDAI16:
4202 if (bfd_link_pic (info))
4204 bad_shared_reloc (abfd, r_type);
4207 htab->sdata[0].sym->ref_regular = 1;
4208 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4213 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4214 h->non_got_ref = TRUE;
4218 /* Indirect .sdata2 relocation. */
4219 case R_PPC_EMB_SDA2I16:
4220 if (bfd_link_pic (info))
4222 bad_shared_reloc (abfd, r_type);
4225 htab->sdata[1].sym->ref_regular = 1;
4226 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4231 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4232 h->non_got_ref = TRUE;
4236 case R_PPC_SDAREL16:
4237 htab->sdata[0].sym->ref_regular = 1;
4240 case R_PPC_VLE_SDAREL_LO16A:
4241 case R_PPC_VLE_SDAREL_LO16D:
4242 case R_PPC_VLE_SDAREL_HI16A:
4243 case R_PPC_VLE_SDAREL_HI16D:
4244 case R_PPC_VLE_SDAREL_HA16A:
4245 case R_PPC_VLE_SDAREL_HA16D:
4248 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4249 h->non_got_ref = TRUE;
4253 case R_PPC_VLE_REL8:
4254 case R_PPC_VLE_REL15:
4255 case R_PPC_VLE_REL24:
4256 case R_PPC_VLE_LO16A:
4257 case R_PPC_VLE_LO16D:
4258 case R_PPC_VLE_HI16A:
4259 case R_PPC_VLE_HI16D:
4260 case R_PPC_VLE_HA16A:
4261 case R_PPC_VLE_HA16D:
4264 case R_PPC_EMB_SDA2REL:
4265 if (bfd_link_pic (info))
4267 bad_shared_reloc (abfd, r_type);
4270 htab->sdata[1].sym->ref_regular = 1;
4273 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4274 h->non_got_ref = TRUE;
4278 case R_PPC_VLE_SDA21_LO:
4279 case R_PPC_VLE_SDA21:
4280 case R_PPC_EMB_SDA21:
4281 case R_PPC_EMB_RELSDA:
4282 if (bfd_link_pic (info))
4284 bad_shared_reloc (abfd, r_type);
4289 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4290 h->non_got_ref = TRUE;
4294 case R_PPC_EMB_NADDR32:
4295 case R_PPC_EMB_NADDR16:
4296 case R_PPC_EMB_NADDR16_LO:
4297 case R_PPC_EMB_NADDR16_HI:
4298 case R_PPC_EMB_NADDR16_HA:
4299 if (bfd_link_pic (info))
4301 bad_shared_reloc (abfd, r_type);
4305 h->non_got_ref = TRUE;
4308 case R_PPC_PLTREL24:
4313 case R_PPC_PLTREL32:
4314 case R_PPC_PLT16_LO:
4315 case R_PPC_PLT16_HI:
4316 case R_PPC_PLT16_HA:
4318 fprintf (stderr, "Reloc requires a PLT entry\n");
4320 /* This symbol requires a procedure linkage table entry. */
4325 /* It does not make sense to have a procedure linkage
4326 table entry for a non-ifunc local symbol. */
4327 info->callbacks->einfo
4328 /* xgettext:c-format */
4329 (_("%H: %s reloc against local symbol\n"),
4330 abfd, sec, rel->r_offset,
4331 ppc_elf_howto_table[r_type]->name);
4332 bfd_set_error (bfd_error_bad_value);
4340 if (r_type == R_PPC_PLTREL24)
4342 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4343 if (bfd_link_pic (info))
4344 addend = rel->r_addend;
4347 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4352 /* The following relocations don't need to propagate the
4353 relocation if linking a shared object since they are
4354 section relative. */
4356 case R_PPC_SECTOFF_LO:
4357 case R_PPC_SECTOFF_HI:
4358 case R_PPC_SECTOFF_HA:
4359 case R_PPC_DTPREL16:
4360 case R_PPC_DTPREL16_LO:
4361 case R_PPC_DTPREL16_HI:
4362 case R_PPC_DTPREL16_HA:
4367 case R_PPC_REL16_LO:
4368 case R_PPC_REL16_HI:
4369 case R_PPC_REL16_HA:
4370 case R_PPC_REL16DX_HA:
4371 ppc_elf_tdata (abfd)->has_rel16 = 1;
4374 /* These are just markers. */
4376 case R_PPC_EMB_MRKREF:
4380 case R_PPC_RELAX_PLT:
4381 case R_PPC_RELAX_PLTREL24:
4385 /* These should only appear in dynamic objects. */
4387 case R_PPC_GLOB_DAT:
4388 case R_PPC_JMP_SLOT:
4389 case R_PPC_RELATIVE:
4390 case R_PPC_IRELATIVE:
4393 /* These aren't handled yet. We'll report an error later. */
4395 case R_PPC_EMB_RELSEC16:
4396 case R_PPC_EMB_RELST_LO:
4397 case R_PPC_EMB_RELST_HI:
4398 case R_PPC_EMB_RELST_HA:
4399 case R_PPC_EMB_BIT_FLD:
4402 /* This refers only to functions defined in the shared library. */
4403 case R_PPC_LOCAL24PC:
4404 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4406 htab->plt_type = PLT_OLD;
4407 htab->old_bfd = abfd;
4409 if (h != NULL && h->type == STT_GNU_IFUNC)
4412 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4417 /* This relocation describes the C++ object vtable hierarchy.
4418 Reconstruct it for later use during GC. */
4419 case R_PPC_GNU_VTINHERIT:
4420 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4424 /* This relocation describes which C++ vtable entries are actually
4425 used. Record for later use during GC. */
4426 case R_PPC_GNU_VTENTRY:
4427 BFD_ASSERT (h != NULL);
4429 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4433 /* We shouldn't really be seeing these. */
4436 case R_PPC_TPREL16_LO:
4437 case R_PPC_TPREL16_HI:
4438 case R_PPC_TPREL16_HA:
4439 if (bfd_link_pic (info))
4440 info->flags |= DF_STATIC_TLS;
4444 case R_PPC_DTPMOD32:
4445 case R_PPC_DTPREL32:
4451 && (sec->flags & SEC_CODE) != 0
4452 && bfd_link_pic (info)
4453 && htab->plt_type == PLT_UNSET)
4455 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4456 the start of a function, which assembles to a REL32
4457 reference to .got2. If we detect one of these, then
4458 force the old PLT layout because the linker cannot
4459 reliably deduce the GOT pointer value needed for
4462 Elf_Internal_Sym *isym;
4464 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4469 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4472 htab->plt_type = PLT_OLD;
4473 htab->old_bfd = abfd;
4476 if (h == NULL || h == htab->elf.hgot)
4482 case R_PPC_ADDR16_LO:
4483 case R_PPC_ADDR16_HI:
4484 case R_PPC_ADDR16_HA:
4487 if (h != NULL && !bfd_link_pic (info))
4489 /* We may need a plt entry if the symbol turns out to be
4490 a function defined in a dynamic object. */
4491 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4494 /* We may need a copy reloc too. */
4496 h->pointer_equality_needed = 1;
4497 if (r_type == R_PPC_ADDR16_HA)
4498 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4499 if (r_type == R_PPC_ADDR16_LO)
4500 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
4506 case R_PPC_REL14_BRTAKEN:
4507 case R_PPC_REL14_BRNTAKEN:
4510 if (h == htab->elf.hgot)
4512 if (htab->plt_type == PLT_UNSET)
4514 htab->plt_type = PLT_OLD;
4515 htab->old_bfd = abfd;
4523 case R_PPC_ADDR14_BRTAKEN:
4524 case R_PPC_ADDR14_BRNTAKEN:
4525 if (h != NULL && !bfd_link_pic (info))
4527 /* We may need a plt entry if the symbol turns out to be
4528 a function defined in a dynamic object. */
4530 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4536 /* If we are creating a shared library, and this is a reloc
4537 against a global symbol, or a non PC relative reloc
4538 against a local symbol, then we need to copy the reloc
4539 into the shared library. However, if we are linking with
4540 -Bsymbolic, we do not need to copy a reloc against a
4541 global symbol which is defined in an object we are
4542 including in the link (i.e., DEF_REGULAR is set). At
4543 this point we have not seen all the input files, so it is
4544 possible that DEF_REGULAR is not set now but will be set
4545 later (it is never cleared). In case of a weak definition,
4546 DEF_REGULAR may be cleared later by a strong definition in
4547 a shared library. We account for that possibility below by
4548 storing information in the dyn_relocs field of the hash
4549 table entry. A similar situation occurs when creating
4550 shared libraries and symbol visibility changes render the
4553 If on the other hand, we are creating an executable, we
4554 may need to keep relocations for symbols satisfied by a
4555 dynamic library if we manage to avoid copy relocs for the
4557 if ((bfd_link_pic (info)
4558 && (must_be_dyn_reloc (info, r_type)
4560 && (!SYMBOLIC_BIND (info, h)
4561 || h->root.type == bfd_link_hash_defweak
4562 || !h->def_regular))))
4563 || (ELIMINATE_COPY_RELOCS
4564 && !bfd_link_pic (info)
4566 && (h->root.type == bfd_link_hash_defweak
4567 || !h->def_regular)))
4571 "ppc_elf_check_relocs needs to "
4572 "create relocation for %s\n",
4573 (h && h->root.root.string
4574 ? h->root.root.string : "<unknown>"));
4578 if (htab->elf.dynobj == NULL)
4579 htab->elf.dynobj = abfd;
4581 sreloc = _bfd_elf_make_dynamic_reloc_section
4582 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4588 /* If this is a global symbol, we count the number of
4589 relocations we need for this symbol. */
4592 struct elf_dyn_relocs *p;
4593 struct elf_dyn_relocs **rel_head;
4595 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4597 if (p == NULL || p->sec != sec)
4599 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4602 p->next = *rel_head;
4609 if (!must_be_dyn_reloc (info, r_type))
4614 /* Track dynamic relocs needed for local syms too.
4615 We really need local syms available to do this
4617 struct ppc_dyn_relocs *p;
4618 struct ppc_dyn_relocs **rel_head;
4619 bfd_boolean is_ifunc;
4622 Elf_Internal_Sym *isym;
4624 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4629 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4633 vpp = &elf_section_data (s)->local_dynrel;
4634 rel_head = (struct ppc_dyn_relocs **) vpp;
4635 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4637 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4639 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4641 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4644 p->next = *rel_head;
4647 p->ifunc = is_ifunc;
4661 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4662 and OBFD, and merge non-conflicting ones. */
4664 _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info)
4666 bfd *obfd = info->output_bfd;
4667 obj_attribute *in_attr, *in_attrs;
4668 obj_attribute *out_attr, *out_attrs;
4670 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4671 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4673 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4674 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4676 if (in_attr->i != out_attr->i)
4678 int in_fp = in_attr->i & 3;
4679 int out_fp = out_attr->i & 3;
4683 else if (out_fp == 0)
4686 out_attr->i ^= in_fp;
4688 else if (out_fp != 2 && in_fp == 2)
4690 /* xgettext:c-format */
4691 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4692 else if (out_fp == 2 && in_fp != 2)
4694 /* xgettext:c-format */
4695 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4696 else if (out_fp == 1 && in_fp == 3)
4698 /* xgettext:c-format */
4699 (_("Warning: %B uses double-precision hard float, "
4700 "%B uses single-precision hard float"), obfd, ibfd);
4701 else if (out_fp == 3 && in_fp == 1)
4703 /* xgettext:c-format */
4704 (_("Warning: %B uses double-precision hard float, "
4705 "%B uses single-precision hard float"), ibfd, obfd);
4707 in_fp = in_attr->i & 0xc;
4708 out_fp = out_attr->i & 0xc;
4711 else if (out_fp == 0)
4714 out_attr->i ^= in_fp;
4716 else if (out_fp != 2 * 4 && in_fp == 2 * 4)
4718 /* xgettext:c-format */
4719 (_("Warning: %B uses 64-bit long double, "
4720 "%B uses 128-bit long double"), ibfd, obfd);
4721 else if (in_fp != 2 * 4 && out_fp == 2 * 4)
4723 /* xgettext:c-format */
4724 (_("Warning: %B uses 64-bit long double, "
4725 "%B uses 128-bit long double"), obfd, ibfd);
4726 else if (out_fp == 1 * 4 && in_fp == 3 * 4)
4728 /* xgettext:c-format */
4729 (_("Warning: %B uses IBM long double, "
4730 "%B uses IEEE long double"), ibfd, obfd);
4731 else if (out_fp == 3 * 4 && in_fp == 1 * 4)
4733 /* xgettext:c-format */
4734 (_("Warning: %B uses IBM long double, "
4735 "%B uses IEEE long double"), obfd, ibfd);
4739 /* Merge object attributes from IBFD into OBFD. Warn if
4740 there are conflicting attributes. */
4742 ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info)
4745 obj_attribute *in_attr, *in_attrs;
4746 obj_attribute *out_attr, *out_attrs;
4748 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
4750 obfd = info->output_bfd;
4751 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4752 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4754 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4755 merge non-conflicting ones. */
4756 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4757 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4758 if (in_attr->i != out_attr->i)
4760 int in_vec = in_attr->i & 3;
4761 int out_vec = out_attr->i & 3;
4765 else if (out_vec == 0)
4768 out_attr->i = in_vec;
4770 /* For now, allow generic to transition to AltiVec or SPE
4771 without a warning. If GCC marked files with their stack
4772 alignment and used don't-care markings for files which are
4773 not affected by the vector ABI, we could warn about this
4775 else if (in_vec == 1)
4777 else if (out_vec == 1)
4780 out_attr->i = in_vec;
4782 else if (out_vec < in_vec)
4784 /* xgettext:c-format */
4785 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4787 else if (out_vec > in_vec)
4789 /* xgettext:c-format */
4790 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4794 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4795 and merge non-conflicting ones. */
4796 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4797 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4798 if (in_attr->i != out_attr->i)
4800 int in_struct = in_attr->i & 3;
4801 int out_struct = out_attr->i & 3;
4803 if (in_struct == 0 || in_struct == 3)
4805 else if (out_struct == 0)
4808 out_attr->i = in_struct;
4810 else if (out_struct < in_struct)
4812 /* xgettext:c-format */
4813 (_("Warning: %B uses r3/r4 for small structure returns, "
4814 "%B uses memory"), obfd, ibfd);
4815 else if (out_struct > in_struct)
4817 /* xgettext:c-format */
4818 (_("Warning: %B uses r3/r4 for small structure returns, "
4819 "%B uses memory"), ibfd, obfd);
4822 /* Merge Tag_compatibility attributes and any common GNU ones. */
4823 _bfd_elf_merge_object_attributes (ibfd, info);
4828 /* Merge backend specific data from an object file to the output
4829 object file when linking. */
4832 ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4834 bfd *obfd = info->output_bfd;
4839 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4842 /* Check if we have the same endianness. */
4843 if (! _bfd_generic_verify_endian_match (ibfd, info))
4846 if (!ppc_elf_merge_obj_attributes (ibfd, info))
4849 new_flags = elf_elfheader (ibfd)->e_flags;
4850 old_flags = elf_elfheader (obfd)->e_flags;
4851 if (!elf_flags_init (obfd))
4853 /* First call, no flags set. */
4854 elf_flags_init (obfd) = TRUE;
4855 elf_elfheader (obfd)->e_flags = new_flags;
4858 /* Compatible flags are ok. */
4859 else if (new_flags == old_flags)
4862 /* Incompatible flags. */
4865 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4866 to be linked with either. */
4868 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4869 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4873 (_("%B: compiled with -mrelocatable and linked with "
4874 "modules compiled normally"), ibfd);
4876 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4877 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4881 (_("%B: compiled normally and linked with "
4882 "modules compiled with -mrelocatable"), ibfd);
4885 /* The output is -mrelocatable-lib iff both the input files are. */
4886 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4887 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4889 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4890 but each input file is either -mrelocatable or -mrelocatable-lib. */
4891 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4892 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4893 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4894 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4896 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4897 any module uses it. */
4898 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4900 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4901 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4903 /* Warn about any other mismatches. */
4904 if (new_flags != old_flags)
4908 /* xgettext:c-format */
4909 (_("%B: uses different e_flags (%#x) fields "
4910 "than previous modules (%#x)"),
4911 ibfd, new_flags, old_flags);
4916 bfd_set_error (bfd_error_bad_value);
4925 ppc_elf_vle_split16 (bfd *input_bfd,
4926 asection *input_section,
4927 unsigned long offset,
4930 split16_format_type split16_format,
4933 unsigned int insn, opcode, top5;
4935 insn = bfd_get_32 (input_bfd, loc);
4936 opcode = insn & 0xfc00f800;
4937 if (opcode == E_OR2I_INSN
4938 || opcode == E_AND2I_DOT_INSN
4939 || opcode == E_OR2IS_INSN
4940 || opcode == E_LIS_INSN
4941 || opcode == E_AND2IS_DOT_INSN)
4943 if (split16_format != split16a_type)
4946 split16_format = split16a_type;
4949 /* xgettext:c-format */
4950 (_("%B(%A+0x%lx): expected 16A style relocation on 0x%08x insn"),
4951 input_bfd, input_section, offset, opcode);
4954 else if (opcode == E_ADD2I_DOT_INSN
4955 || opcode == E_ADD2IS_INSN
4956 || opcode == E_CMP16I_INSN
4957 || opcode == E_MULL2I_INSN
4958 || opcode == E_CMPL16I_INSN
4959 || opcode == E_CMPH16I_INSN
4960 || opcode == E_CMPHL16I_INSN)
4962 if (split16_format != split16d_type)
4965 split16_format = split16d_type;
4968 /* xgettext:c-format */
4969 (_("%B(%A+0x%lx): expected 16D style relocation on 0x%08x insn"),
4970 input_bfd, input_section, offset, opcode);
4973 top5 = value & 0xf800;
4974 top5 = top5 << (split16_format == split16a_type ? 5 : 10);
4975 insn &= (split16_format == split16a_type ? ~0x1f07ff : ~0x3e007ff);
4977 insn |= value & 0x7ff;
4978 bfd_put_32 (input_bfd, insn, loc);
4981 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4982 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4984 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4985 struct bfd_link_info *info)
4987 struct ppc_elf_link_hash_table *htab;
4990 htab = ppc_elf_hash_table (info);
4992 if (htab->plt_type == PLT_UNSET)
4994 struct elf_link_hash_entry *h;
4996 if (htab->params->plt_style == PLT_OLD)
4997 htab->plt_type = PLT_OLD;
4998 else if (bfd_link_pic (info)
4999 && htab->elf.dynamic_sections_created
5000 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
5001 FALSE, FALSE, TRUE)) != NULL
5002 && (h->type == STT_FUNC
5005 && !(SYMBOL_CALLS_LOCAL (info, h)
5006 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
5008 /* Profiling of shared libs (and pies) is not supported with
5009 secure plt, because ppc32 does profiling before a
5010 function prologue and a secure plt pic call stubs needs
5011 r30 to be set up. */
5012 htab->plt_type = PLT_OLD;
5017 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
5019 /* Look through the reloc flags left by ppc_elf_check_relocs.
5020 Use the old style bss plt if a file makes plt calls
5021 without using the new relocs, and if ld isn't given
5022 --secure-plt and we never see REL16 relocs. */
5023 if (plt_type == PLT_UNSET)
5025 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
5026 if (is_ppc_elf (ibfd))
5028 if (ppc_elf_tdata (ibfd)->has_rel16)
5030 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
5033 htab->old_bfd = ibfd;
5037 htab->plt_type = plt_type;
5040 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
5042 if (htab->old_bfd != NULL)
5043 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
5046 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
5049 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
5051 if (htab->plt_type == PLT_NEW)
5053 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
5054 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
5056 /* The new PLT is a loaded section. */
5057 if (htab->elf.splt != NULL
5058 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.splt, flags))
5061 /* The new GOT is not executable. */
5062 if (htab->elf.sgot != NULL
5063 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.sgot, flags))
5068 /* Stop an unused .glink section from affecting .text alignment. */
5069 if (htab->glink != NULL
5070 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
5073 return htab->plt_type == PLT_NEW;
5076 /* Return the section that should be marked against GC for a given
5080 ppc_elf_gc_mark_hook (asection *sec,
5081 struct bfd_link_info *info,
5082 Elf_Internal_Rela *rel,
5083 struct elf_link_hash_entry *h,
5084 Elf_Internal_Sym *sym)
5087 switch (ELF32_R_TYPE (rel->r_info))
5089 case R_PPC_GNU_VTINHERIT:
5090 case R_PPC_GNU_VTENTRY:
5094 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5097 /* Update the got, plt and dynamic reloc reference counts for the
5098 section being removed. */
5101 ppc_elf_gc_sweep_hook (bfd *abfd,
5102 struct bfd_link_info *info,
5104 const Elf_Internal_Rela *relocs)
5106 struct ppc_elf_link_hash_table *htab;
5107 Elf_Internal_Shdr *symtab_hdr;
5108 struct elf_link_hash_entry **sym_hashes;
5109 bfd_signed_vma *local_got_refcounts;
5110 const Elf_Internal_Rela *rel, *relend;
5113 if (bfd_link_relocatable (info))
5116 if ((sec->flags & SEC_ALLOC) == 0)
5119 elf_section_data (sec)->local_dynrel = NULL;
5121 htab = ppc_elf_hash_table (info);
5122 symtab_hdr = &elf_symtab_hdr (abfd);
5123 sym_hashes = elf_sym_hashes (abfd);
5124 local_got_refcounts = elf_local_got_refcounts (abfd);
5125 got2 = bfd_get_section_by_name (abfd, ".got2");
5127 relend = relocs + sec->reloc_count;
5128 for (rel = relocs; rel < relend; rel++)
5130 unsigned long r_symndx;
5131 enum elf_ppc_reloc_type r_type;
5132 struct elf_link_hash_entry *h = NULL;
5134 r_symndx = ELF32_R_SYM (rel->r_info);
5135 if (r_symndx >= symtab_hdr->sh_info)
5137 struct elf_dyn_relocs **pp, *p;
5138 struct ppc_elf_link_hash_entry *eh;
5140 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5141 while (h->root.type == bfd_link_hash_indirect
5142 || h->root.type == bfd_link_hash_warning)
5143 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5144 eh = (struct ppc_elf_link_hash_entry *) h;
5146 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5149 /* Everything must go for SEC. */
5155 r_type = ELF32_R_TYPE (rel->r_info);
5156 if (!htab->is_vxworks
5158 && local_got_refcounts != NULL
5159 && (!bfd_link_pic (info)
5160 || is_branch_reloc (r_type)))
5162 struct plt_entry **local_plt = (struct plt_entry **)
5163 (local_got_refcounts + symtab_hdr->sh_info);
5164 char *local_got_tls_masks = (char *)
5165 (local_plt + symtab_hdr->sh_info);
5166 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5168 struct plt_entry **ifunc = local_plt + r_symndx;
5170 struct plt_entry *ent;
5172 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5173 addend = rel->r_addend;
5174 ent = find_plt_ent (ifunc, got2, addend);
5175 if (ent->plt.refcount > 0)
5176 ent->plt.refcount -= 1;
5183 case R_PPC_GOT_TLSLD16:
5184 case R_PPC_GOT_TLSLD16_LO:
5185 case R_PPC_GOT_TLSLD16_HI:
5186 case R_PPC_GOT_TLSLD16_HA:
5187 case R_PPC_GOT_TLSGD16:
5188 case R_PPC_GOT_TLSGD16_LO:
5189 case R_PPC_GOT_TLSGD16_HI:
5190 case R_PPC_GOT_TLSGD16_HA:
5191 case R_PPC_GOT_TPREL16:
5192 case R_PPC_GOT_TPREL16_LO:
5193 case R_PPC_GOT_TPREL16_HI:
5194 case R_PPC_GOT_TPREL16_HA:
5195 case R_PPC_GOT_DTPREL16:
5196 case R_PPC_GOT_DTPREL16_LO:
5197 case R_PPC_GOT_DTPREL16_HI:
5198 case R_PPC_GOT_DTPREL16_HA:
5200 case R_PPC_GOT16_LO:
5201 case R_PPC_GOT16_HI:
5202 case R_PPC_GOT16_HA:
5205 if (h->got.refcount > 0)
5207 if (!bfd_link_pic (info))
5209 struct plt_entry *ent;
5211 ent = find_plt_ent (&h->plt.plist, NULL, 0);
5212 if (ent != NULL && ent->plt.refcount > 0)
5213 ent->plt.refcount -= 1;
5216 else if (local_got_refcounts != NULL)
5218 if (local_got_refcounts[r_symndx] > 0)
5219 local_got_refcounts[r_symndx]--;
5225 case R_PPC_REL14_BRTAKEN:
5226 case R_PPC_REL14_BRNTAKEN:
5228 if (h == NULL || h == htab->elf.hgot)
5235 case R_PPC_ADDR16_LO:
5236 case R_PPC_ADDR16_HI:
5237 case R_PPC_ADDR16_HA:
5239 case R_PPC_ADDR14_BRTAKEN:
5240 case R_PPC_ADDR14_BRNTAKEN:
5243 if (bfd_link_pic (info))
5248 case R_PPC_PLTREL24:
5249 case R_PPC_PLTREL32:
5250 case R_PPC_PLT16_LO:
5251 case R_PPC_PLT16_HI:
5252 case R_PPC_PLT16_HA:
5256 struct plt_entry *ent;
5258 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5259 addend = rel->r_addend;
5260 ent = find_plt_ent (&h->plt.plist, got2, addend);
5261 if (ent != NULL && ent->plt.refcount > 0)
5262 ent->plt.refcount -= 1;
5273 /* Set plt output section type, htab->tls_get_addr, and call the
5274 generic ELF tls_setup function. */
5277 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5279 struct ppc_elf_link_hash_table *htab;
5281 htab = ppc_elf_hash_table (info);
5282 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5283 FALSE, FALSE, TRUE);
5284 if (htab->plt_type != PLT_NEW)
5285 htab->params->no_tls_get_addr_opt = TRUE;
5287 if (!htab->params->no_tls_get_addr_opt)
5289 struct elf_link_hash_entry *opt, *tga;
5290 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5291 FALSE, FALSE, TRUE);
5293 && (opt->root.type == bfd_link_hash_defined
5294 || opt->root.type == bfd_link_hash_defweak))
5296 /* If glibc supports an optimized __tls_get_addr call stub,
5297 signalled by the presence of __tls_get_addr_opt, and we'll
5298 be calling __tls_get_addr via a plt call stub, then
5299 make __tls_get_addr point to __tls_get_addr_opt. */
5300 tga = htab->tls_get_addr;
5301 if (htab->elf.dynamic_sections_created
5303 && (tga->type == STT_FUNC
5305 && !(SYMBOL_CALLS_LOCAL (info, tga)
5306 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga)))
5308 struct plt_entry *ent;
5309 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5310 if (ent->plt.refcount > 0)
5314 tga->root.type = bfd_link_hash_indirect;
5315 tga->root.u.i.link = &opt->root;
5316 ppc_elf_copy_indirect_symbol (info, opt, tga);
5318 if (opt->dynindx != -1)
5320 /* Use __tls_get_addr_opt in dynamic relocations. */
5322 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5324 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5327 htab->tls_get_addr = opt;
5332 htab->params->no_tls_get_addr_opt = TRUE;
5334 if (htab->plt_type == PLT_NEW
5335 && htab->elf.splt != NULL
5336 && htab->elf.splt->output_section != NULL)
5338 elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS;
5339 elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE;
5342 return _bfd_elf_tls_setup (obfd, info);
5345 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5349 branch_reloc_hash_match (const bfd *ibfd,
5350 const Elf_Internal_Rela *rel,
5351 const struct elf_link_hash_entry *hash)
5353 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5354 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5355 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5357 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5359 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5360 struct elf_link_hash_entry *h;
5362 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5363 while (h->root.type == bfd_link_hash_indirect
5364 || h->root.type == bfd_link_hash_warning)
5365 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5372 /* Run through all the TLS relocs looking for optimization
5376 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5377 struct bfd_link_info *info)
5381 struct ppc_elf_link_hash_table *htab;
5384 if (!bfd_link_executable (info))
5387 htab = ppc_elf_hash_table (info);
5391 /* Make two passes through the relocs. First time check that tls
5392 relocs involved in setting up a tls_get_addr call are indeed
5393 followed by such a call. If they are not, don't do any tls
5394 optimization. On the second pass twiddle tls_mask flags to
5395 notify relocate_section that optimization can be done, and
5396 adjust got and plt refcounts. */
5397 for (pass = 0; pass < 2; ++pass)
5398 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5400 Elf_Internal_Sym *locsyms = NULL;
5401 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5402 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5404 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5405 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5407 Elf_Internal_Rela *relstart, *rel, *relend;
5408 int expecting_tls_get_addr = 0;
5410 /* Read the relocations. */
5411 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5413 if (relstart == NULL)
5416 relend = relstart + sec->reloc_count;
5417 for (rel = relstart; rel < relend; rel++)
5419 enum elf_ppc_reloc_type r_type;
5420 unsigned long r_symndx;
5421 struct elf_link_hash_entry *h = NULL;
5423 char tls_set, tls_clear;
5424 bfd_boolean is_local;
5425 bfd_signed_vma *got_count;
5427 r_symndx = ELF32_R_SYM (rel->r_info);
5428 if (r_symndx >= symtab_hdr->sh_info)
5430 struct elf_link_hash_entry **sym_hashes;
5432 sym_hashes = elf_sym_hashes (ibfd);
5433 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5434 while (h->root.type == bfd_link_hash_indirect
5435 || h->root.type == bfd_link_hash_warning)
5436 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5444 r_type = ELF32_R_TYPE (rel->r_info);
5445 /* If this section has old-style __tls_get_addr calls
5446 without marker relocs, then check that each
5447 __tls_get_addr call reloc is preceded by a reloc
5448 that conceivably belongs to the __tls_get_addr arg
5449 setup insn. If we don't find matching arg setup
5450 relocs, don't do any tls optimization. */
5452 && sec->has_tls_get_addr_call
5454 && h == htab->tls_get_addr
5455 && !expecting_tls_get_addr
5456 && is_branch_reloc (r_type))
5458 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5459 "TLS optimization disabled\n",
5460 ibfd, sec, rel->r_offset);
5461 if (elf_section_data (sec)->relocs != relstart)
5466 expecting_tls_get_addr = 0;
5469 case R_PPC_GOT_TLSLD16:
5470 case R_PPC_GOT_TLSLD16_LO:
5471 expecting_tls_get_addr = 1;
5474 case R_PPC_GOT_TLSLD16_HI:
5475 case R_PPC_GOT_TLSLD16_HA:
5476 /* These relocs should never be against a symbol
5477 defined in a shared lib. Leave them alone if
5478 that turns out to be the case. */
5487 case R_PPC_GOT_TLSGD16:
5488 case R_PPC_GOT_TLSGD16_LO:
5489 expecting_tls_get_addr = 1;
5492 case R_PPC_GOT_TLSGD16_HI:
5493 case R_PPC_GOT_TLSGD16_HA:
5499 tls_set = TLS_TLS | TLS_TPRELGD;
5503 case R_PPC_GOT_TPREL16:
5504 case R_PPC_GOT_TPREL16_LO:
5505 case R_PPC_GOT_TPREL16_HI:
5506 case R_PPC_GOT_TPREL16_HA:
5511 tls_clear = TLS_TPREL;
5519 expecting_tls_get_addr = 2;
5530 if (!expecting_tls_get_addr
5531 || (expecting_tls_get_addr == 1
5532 && !sec->has_tls_get_addr_call))
5535 if (rel + 1 < relend
5536 && branch_reloc_hash_match (ibfd, rel + 1,
5537 htab->tls_get_addr))
5540 /* Uh oh, we didn't find the expected call. We
5541 could just mark this symbol to exclude it
5542 from tls optimization but it's safer to skip
5543 the entire optimization. */
5544 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5545 "TLS optimization disabled\n"),
5546 ibfd, sec, rel->r_offset);
5547 if (elf_section_data (sec)->relocs != relstart)
5552 if (expecting_tls_get_addr)
5554 struct plt_entry *ent;
5557 if (bfd_link_pic (info)
5558 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5559 addend = rel[1].r_addend;
5560 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5562 if (ent != NULL && ent->plt.refcount > 0)
5563 ent->plt.refcount -= 1;
5565 if (expecting_tls_get_addr == 2)
5571 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5572 got_count = &h->got.refcount;
5576 bfd_signed_vma *lgot_refs;
5577 struct plt_entry **local_plt;
5580 if (locsyms == NULL)
5582 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5583 if (locsyms == NULL)
5584 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5585 symtab_hdr->sh_info,
5586 0, NULL, NULL, NULL);
5587 if (locsyms == NULL)
5589 if (elf_section_data (sec)->relocs != relstart)
5594 lgot_refs = elf_local_got_refcounts (ibfd);
5595 if (lgot_refs == NULL)
5597 local_plt = (struct plt_entry **)
5598 (lgot_refs + symtab_hdr->sh_info);
5599 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5600 tls_mask = &lgot_masks[r_symndx];
5601 got_count = &lgot_refs[r_symndx];
5606 /* We managed to get rid of a got entry. */
5611 *tls_mask |= tls_set;
5612 *tls_mask &= ~tls_clear;
5615 if (elf_section_data (sec)->relocs != relstart)
5620 && (symtab_hdr->contents != (unsigned char *) locsyms))
5622 if (!info->keep_memory)
5625 symtab_hdr->contents = (unsigned char *) locsyms;
5631 /* Return true if we have dynamic relocs that apply to read-only sections. */
5634 readonly_dynrelocs (struct elf_link_hash_entry *h)
5636 struct elf_dyn_relocs *p;
5638 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5640 asection *s = p->sec->output_section;
5643 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5644 == (SEC_READONLY | SEC_ALLOC)))
5650 /* Adjust a symbol defined by a dynamic object and referenced by a
5651 regular object. The current definition is in some section of the
5652 dynamic object, but we're not including those sections. We have to
5653 change the definition to something the rest of the link can
5657 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5658 struct elf_link_hash_entry *h)
5660 struct ppc_elf_link_hash_table *htab;
5664 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5665 h->root.root.string);
5668 /* Make sure we know what is going on here. */
5669 htab = ppc_elf_hash_table (info);
5670 BFD_ASSERT (htab->elf.dynobj != NULL
5672 || h->type == STT_GNU_IFUNC
5673 || h->u.weakdef != NULL
5676 && !h->def_regular)));
5678 /* Deal with function syms. */
5679 if (h->type == STT_FUNC
5680 || h->type == STT_GNU_IFUNC
5683 /* Clear procedure linkage table information for any symbol that
5684 won't need a .plt entry. */
5685 struct plt_entry *ent;
5686 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5687 if (ent->plt.refcount > 0)
5690 || (h->type != STT_GNU_IFUNC
5691 && (SYMBOL_CALLS_LOCAL (info, h)
5692 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))))
5694 /* A PLT entry is not required/allowed when:
5696 1. We are not using ld.so; because then the PLT entry
5697 can't be set up, so we can't use one. In this case,
5698 ppc_elf_adjust_dynamic_symbol won't even be called.
5700 2. GC has rendered the entry unused.
5702 3. We know for certain that a call to this symbol
5703 will go to this object, or will remain undefined. */
5704 h->plt.plist = NULL;
5706 h->pointer_equality_needed = 0;
5710 /* Taking a function's address in a read/write section
5711 doesn't require us to define the function symbol in the
5712 executable on a plt call stub. A dynamic reloc can
5713 be used instead, giving better runtime performance.
5714 (Calls via that function pointer don't need to bounce
5715 through the plt call stub.) Similarly, use a dynamic
5716 reloc for a weak reference when possible, allowing the
5717 resolution of the symbol to be set at load time rather
5719 if ((h->pointer_equality_needed
5720 || (!h->ref_regular_nonweak && h->non_got_ref))
5721 && !htab->is_vxworks
5722 && !ppc_elf_hash_entry (h)->has_sda_refs
5723 && !readonly_dynrelocs (h))
5725 h->pointer_equality_needed = 0;
5726 /* After adjust_dynamic_symbol, non_got_ref set in the
5727 non-pic case means that dyn_relocs for this symbol
5728 should be discarded. */
5732 h->protected_def = 0;
5736 h->plt.plist = NULL;
5738 /* If this is a weak symbol, and there is a real definition, the
5739 processor independent code will have arranged for us to see the
5740 real definition first, and we can just use the same value. */
5741 if (h->u.weakdef != NULL)
5743 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5744 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5745 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5746 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5747 if (ELIMINATE_COPY_RELOCS)
5748 h->non_got_ref = h->u.weakdef->non_got_ref;
5752 /* This is a reference to a symbol defined by a dynamic object which
5753 is not a function. */
5755 /* If we are creating a shared library, we must presume that the
5756 only references to the symbol are via the global offset table.
5757 For such cases we need not do anything here; the relocations will
5758 be handled correctly by relocate_section. */
5759 if (bfd_link_pic (info))
5761 h->protected_def = 0;
5765 /* If there are no references to this symbol that do not use the
5766 GOT, we don't need to generate a copy reloc. */
5767 if (!h->non_got_ref)
5769 h->protected_def = 0;
5773 /* Protected variables do not work with .dynbss. The copy in
5774 .dynbss won't be used by the shared library with the protected
5775 definition for the variable. Editing to PIC, or text relocations
5776 are preferable to an incorrect program. */
5777 if (h->protected_def)
5779 if (ELIMINATE_COPY_RELOCS
5780 && ppc_elf_hash_entry (h)->has_addr16_ha
5781 && ppc_elf_hash_entry (h)->has_addr16_lo
5782 && htab->params->pic_fixup == 0
5783 && info->disable_target_specific_optimizations <= 1)
5784 htab->params->pic_fixup = 1;
5789 /* If -z nocopyreloc was given, we won't generate them either. */
5790 if (info->nocopyreloc)
5796 /* If we didn't find any dynamic relocs in read-only sections, then
5797 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5798 We can't do this if there are any small data relocations. This
5799 doesn't work on VxWorks, where we can not have dynamic
5800 relocations (other than copy and jump slot relocations) in an
5802 if (ELIMINATE_COPY_RELOCS
5803 && !ppc_elf_hash_entry (h)->has_sda_refs
5804 && !htab->is_vxworks
5806 && !readonly_dynrelocs (h))
5812 /* We must allocate the symbol in our .dynbss section, which will
5813 become part of the .bss section of the executable. There will be
5814 an entry for this symbol in the .dynsym section. The dynamic
5815 object will contain position independent code, so all references
5816 from the dynamic object to this symbol will go through the global
5817 offset table. The dynamic linker will use the .dynsym entry to
5818 determine the address it must put in the global offset table, so
5819 both the dynamic object and the regular object will refer to the
5820 same memory location for the variable.
5822 Of course, if the symbol is referenced using SDAREL relocs, we
5823 must instead allocate it in .sbss. */
5825 if (ppc_elf_hash_entry (h)->has_sda_refs)
5827 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5828 s = htab->elf.sdynrelro;
5830 s = htab->elf.sdynbss;
5831 BFD_ASSERT (s != NULL);
5833 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5834 copy the initial value out of the dynamic object and into the
5835 runtime process image. We need to remember the offset into the
5836 .rela.bss section we are going to use. */
5837 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5841 if (ppc_elf_hash_entry (h)->has_sda_refs)
5842 srel = htab->relsbss;
5843 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5844 srel = htab->elf.sreldynrelro;
5846 srel = htab->elf.srelbss;
5847 BFD_ASSERT (srel != NULL);
5848 srel->size += sizeof (Elf32_External_Rela);
5852 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5855 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5856 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5857 specifying the addend on the plt relocation. For -fpic code, the sym
5858 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5859 xxxxxxxx.got2.plt_pic32.<callee>. */
5862 add_stub_sym (struct plt_entry *ent,
5863 struct elf_link_hash_entry *h,
5864 struct bfd_link_info *info)
5866 struct elf_link_hash_entry *sh;
5867 size_t len1, len2, len3;
5870 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5872 if (bfd_link_pic (info))
5873 stub = ".plt_pic32.";
5875 stub = ".plt_call32.";
5877 len1 = strlen (h->root.root.string);
5878 len2 = strlen (stub);
5881 len3 = strlen (ent->sec->name);
5882 name = bfd_malloc (len1 + len2 + len3 + 9);
5885 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5887 memcpy (name + 8, ent->sec->name, len3);
5888 memcpy (name + 8 + len3, stub, len2);
5889 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5890 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5893 if (sh->root.type == bfd_link_hash_new)
5895 sh->root.type = bfd_link_hash_defined;
5896 sh->root.u.def.section = htab->glink;
5897 sh->root.u.def.value = ent->glink_offset;
5898 sh->ref_regular = 1;
5899 sh->def_regular = 1;
5900 sh->ref_regular_nonweak = 1;
5901 sh->forced_local = 1;
5903 sh->root.linker_def = 1;
5908 /* Allocate NEED contiguous space in .got, and return the offset.
5909 Handles allocation of the got header when crossing 32k. */
5912 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5915 unsigned int max_before_header;
5917 if (htab->plt_type == PLT_VXWORKS)
5919 where = htab->elf.sgot->size;
5920 htab->elf.sgot->size += need;
5924 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5925 if (need <= htab->got_gap)
5927 where = max_before_header - htab->got_gap;
5928 htab->got_gap -= need;
5932 if (htab->elf.sgot->size + need > max_before_header
5933 && htab->elf.sgot->size <= max_before_header)
5935 htab->got_gap = max_before_header - htab->elf.sgot->size;
5936 htab->elf.sgot->size = max_before_header + htab->got_header_size;
5938 where = htab->elf.sgot->size;
5939 htab->elf.sgot->size += need;
5945 /* If H is undefined, make it dynamic if that makes sense. */
5948 ensure_undef_dynamic (struct bfd_link_info *info,
5949 struct elf_link_hash_entry *h)
5951 struct elf_link_hash_table *htab = elf_hash_table (info);
5953 if (htab->dynamic_sections_created
5954 && ((info->dynamic_undefined_weak != 0
5955 && h->root.type == bfd_link_hash_undefweak)
5956 || h->root.type == bfd_link_hash_undefined)
5959 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
5960 return bfd_elf_link_record_dynamic_symbol (info, h);
5964 /* Allocate space in associated reloc sections for dynamic relocs. */
5967 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5969 struct bfd_link_info *info = inf;
5970 struct ppc_elf_link_hash_entry *eh;
5971 struct ppc_elf_link_hash_table *htab;
5972 struct elf_dyn_relocs *p;
5975 if (h->root.type == bfd_link_hash_indirect)
5978 htab = ppc_elf_hash_table (info);
5979 eh = (struct ppc_elf_link_hash_entry *) h;
5980 if (eh->elf.got.refcount > 0
5981 || (ELIMINATE_COPY_RELOCS
5982 && !eh->elf.def_regular
5983 && eh->elf.protected_def
5984 && eh->has_addr16_ha
5985 && eh->has_addr16_lo
5986 && htab->params->pic_fixup > 0))
5990 /* Make sure this symbol is output as a dynamic symbol. */
5991 if (!ensure_undef_dynamic (info, &eh->elf))
5995 if ((eh->tls_mask & TLS_TLS) != 0)
5997 if ((eh->tls_mask & TLS_LD) != 0)
5999 if (!eh->elf.def_dynamic)
6000 /* We'll just use htab->tlsld_got.offset. This should
6001 always be the case. It's a little odd if we have
6002 a local dynamic reloc against a non-local symbol. */
6003 htab->tlsld_got.refcount += 1;
6007 if ((eh->tls_mask & TLS_GD) != 0)
6009 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
6011 if ((eh->tls_mask & TLS_DTPREL) != 0)
6017 eh->elf.got.offset = (bfd_vma) -1;
6020 eh->elf.got.offset = allocate_got (htab, need);
6021 if ((bfd_link_pic (info)
6022 || (htab->elf.dynamic_sections_created
6023 && eh->elf.dynindx != -1
6024 && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf)))
6025 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &eh->elf))
6027 asection *rsec = htab->elf.srelgot;
6029 if (eh->elf.type == STT_GNU_IFUNC)
6030 rsec = htab->elf.irelplt;
6031 /* All the entries we allocated need relocs.
6032 Except LD only needs one. */
6033 if ((eh->tls_mask & TLS_LD) != 0
6034 && eh->elf.def_dynamic)
6036 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
6041 eh->elf.got.offset = (bfd_vma) -1;
6043 /* If no dynamic sections we can't have dynamic relocs, except for
6044 IFUNCs which are handled even in static executables. */
6045 if (!htab->elf.dynamic_sections_created
6046 && h->type != STT_GNU_IFUNC)
6047 eh->dyn_relocs = NULL;
6049 if (eh->dyn_relocs == NULL)
6052 /* In the shared -Bsymbolic case, discard space allocated for
6053 dynamic pc-relative relocs against symbols which turn out to be
6054 defined in regular objects. For the normal shared case, discard
6055 space for relocs that have become local due to symbol visibility
6057 else if (bfd_link_pic (info))
6059 /* Discard relocs on undefined symbols that must be local. */
6060 if (h->root.type == bfd_link_hash_undefined
6061 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6062 eh->dyn_relocs = NULL;
6064 /* Also discard relocs on undefined weak syms with non-default
6065 visibility, or when dynamic_undefined_weak says so. */
6066 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
6067 eh->dyn_relocs = NULL;
6069 /* Relocs that use pc_count are those that appear on a call insn,
6070 or certain REL relocs (see must_be_dyn_reloc) that can be
6071 generated via assembly. We want calls to protected symbols to
6072 resolve directly to the function rather than going via the plt.
6073 If people want function pointer comparisons to work as expected
6074 then they should avoid writing weird assembly. */
6075 else if (SYMBOL_CALLS_LOCAL (info, h))
6077 struct elf_dyn_relocs **pp;
6079 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6081 p->count -= p->pc_count;
6090 if (htab->is_vxworks)
6092 struct elf_dyn_relocs **pp;
6094 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6096 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6103 if (eh->dyn_relocs != NULL)
6105 /* Make sure this symbol is output as a dynamic symbol. */
6106 if (!ensure_undef_dynamic (info, h))
6110 else if (ELIMINATE_COPY_RELOCS)
6112 /* For the non-pic case, discard space for relocs against
6113 symbols which turn out to need copy relocs or are not
6117 && !(h->protected_def
6118 && eh->has_addr16_ha
6119 && eh->has_addr16_lo
6120 && htab->params->pic_fixup > 0))
6122 /* Make sure this symbol is output as a dynamic symbol. */
6123 if (!ensure_undef_dynamic (info, h))
6126 if (h->dynindx == -1)
6127 eh->dyn_relocs = NULL;
6130 eh->dyn_relocs = NULL;
6133 /* Allocate space. */
6134 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6136 asection *sreloc = elf_section_data (p->sec)->sreloc;
6137 if (eh->elf.type == STT_GNU_IFUNC)
6138 sreloc = htab->elf.irelplt;
6139 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6142 /* Handle PLT relocs. Done last, after dynindx has settled. */
6143 dyn = htab->elf.dynamic_sections_created && h->dynindx != -1;
6144 if (dyn || h->type == STT_GNU_IFUNC)
6146 struct plt_entry *ent;
6147 bfd_boolean doneone = FALSE;
6148 bfd_vma plt_offset = 0, glink_offset = 0;
6150 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6151 if (ent->plt.refcount > 0)
6153 asection *s = htab->elf.splt;
6158 if (htab->plt_type == PLT_NEW || !dyn)
6162 plt_offset = s->size;
6165 ent->plt.offset = plt_offset;
6168 if (!doneone || bfd_link_pic (info))
6170 glink_offset = s->size;
6171 s->size += GLINK_ENTRY_SIZE;
6172 if (h == htab->tls_get_addr
6173 && !htab->params->no_tls_get_addr_opt)
6174 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
6177 && !bfd_link_pic (info)
6181 h->root.u.def.section = s;
6182 h->root.u.def.value = glink_offset;
6184 ent->glink_offset = glink_offset;
6186 if (htab->params->emit_stub_syms
6187 && !add_stub_sym (ent, h, info))
6194 /* If this is the first .plt entry, make room
6195 for the special first entry. */
6197 s->size += htab->plt_initial_entry_size;
6199 /* The PowerPC PLT is actually composed of two
6200 parts, the first part is 2 words (for a load
6201 and a jump), and then there is a remaining
6202 word available at the end. */
6203 plt_offset = (htab->plt_initial_entry_size
6204 + (htab->plt_slot_size
6206 - htab->plt_initial_entry_size)
6207 / htab->plt_entry_size)));
6209 /* If this symbol is not defined in a regular
6210 file, and we are not generating a shared
6211 library, then set the symbol to this location
6212 in the .plt. This is to avoid text
6213 relocations, and is required to make
6214 function pointers compare as equal between
6215 the normal executable and the shared library. */
6216 if (! bfd_link_pic (info)
6220 h->root.u.def.section = s;
6221 h->root.u.def.value = plt_offset;
6224 /* Make room for this entry. */
6225 s->size += htab->plt_entry_size;
6226 /* After the 8192nd entry, room for two entries
6228 if (htab->plt_type == PLT_OLD
6229 && (s->size - htab->plt_initial_entry_size)
6230 / htab->plt_entry_size
6231 > PLT_NUM_SINGLE_ENTRIES)
6232 s->size += htab->plt_entry_size;
6234 ent->plt.offset = plt_offset;
6237 /* We also need to make an entry in the .rela.plt section. */
6241 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6244 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
6246 if (htab->plt_type == PLT_VXWORKS)
6248 /* Allocate space for the unloaded relocations. */
6249 if (!bfd_link_pic (info)
6250 && htab->elf.dynamic_sections_created)
6253 == (bfd_vma) htab->plt_initial_entry_size)
6255 htab->srelplt2->size
6256 += (sizeof (Elf32_External_Rela)
6257 * VXWORKS_PLTRESOLVE_RELOCS);
6260 htab->srelplt2->size
6261 += (sizeof (Elf32_External_Rela)
6262 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6265 /* Every PLT entry has an associated GOT entry in
6267 htab->elf.sgotplt->size += 4;
6274 ent->plt.offset = (bfd_vma) -1;
6278 h->plt.plist = NULL;
6284 h->plt.plist = NULL;
6291 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6292 read-only sections. */
6295 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
6297 if (h->root.type == bfd_link_hash_indirect)
6300 if (readonly_dynrelocs (h))
6302 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
6304 /* Not an error, just cut short the traversal. */
6310 static const unsigned char glink_eh_frame_cie[] =
6312 0, 0, 0, 16, /* length. */
6313 0, 0, 0, 0, /* id. */
6314 1, /* CIE version. */
6315 'z', 'R', 0, /* Augmentation string. */
6316 4, /* Code alignment. */
6317 0x7c, /* Data alignment. */
6319 1, /* Augmentation size. */
6320 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6321 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6324 /* Set the sizes of the dynamic sections. */
6327 ppc_elf_size_dynamic_sections (bfd *output_bfd,
6328 struct bfd_link_info *info)
6330 struct ppc_elf_link_hash_table *htab;
6336 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6339 htab = ppc_elf_hash_table (info);
6340 BFD_ASSERT (htab->elf.dynobj != NULL);
6342 if (elf_hash_table (info)->dynamic_sections_created)
6344 /* Set the contents of the .interp section to the interpreter. */
6345 if (bfd_link_executable (info) && !info->nointerp)
6347 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6348 BFD_ASSERT (s != NULL);
6349 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6350 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6354 if (htab->plt_type == PLT_OLD)
6355 htab->got_header_size = 16;
6356 else if (htab->plt_type == PLT_NEW)
6357 htab->got_header_size = 12;
6359 /* Set up .got offsets for local syms, and space for local dynamic
6361 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6363 bfd_signed_vma *local_got;
6364 bfd_signed_vma *end_local_got;
6365 struct plt_entry **local_plt;
6366 struct plt_entry **end_local_plt;
6368 bfd_size_type locsymcount;
6369 Elf_Internal_Shdr *symtab_hdr;
6371 if (!is_ppc_elf (ibfd))
6374 for (s = ibfd->sections; s != NULL; s = s->next)
6376 struct ppc_dyn_relocs *p;
6378 for (p = ((struct ppc_dyn_relocs *)
6379 elf_section_data (s)->local_dynrel);
6383 if (!bfd_is_abs_section (p->sec)
6384 && bfd_is_abs_section (p->sec->output_section))
6386 /* Input section has been discarded, either because
6387 it is a copy of a linkonce section or due to
6388 linker script /DISCARD/, so we'll be discarding
6391 else if (htab->is_vxworks
6392 && strcmp (p->sec->output_section->name,
6395 /* Relocations in vxworks .tls_vars sections are
6396 handled specially by the loader. */
6398 else if (p->count != 0)
6400 asection *sreloc = elf_section_data (p->sec)->sreloc;
6402 sreloc = htab->elf.irelplt;
6403 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6404 if ((p->sec->output_section->flags
6405 & (SEC_READONLY | SEC_ALLOC))
6406 == (SEC_READONLY | SEC_ALLOC))
6407 info->flags |= DF_TEXTREL;
6412 local_got = elf_local_got_refcounts (ibfd);
6416 symtab_hdr = &elf_symtab_hdr (ibfd);
6417 locsymcount = symtab_hdr->sh_info;
6418 end_local_got = local_got + locsymcount;
6419 local_plt = (struct plt_entry **) end_local_got;
6420 end_local_plt = local_plt + locsymcount;
6421 lgot_masks = (char *) end_local_plt;
6423 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6426 unsigned int need = 0;
6427 if ((*lgot_masks & TLS_TLS) != 0)
6429 if ((*lgot_masks & TLS_GD) != 0)
6431 if ((*lgot_masks & TLS_LD) != 0)
6432 htab->tlsld_got.refcount += 1;
6433 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6435 if ((*lgot_masks & TLS_DTPREL) != 0)
6441 *local_got = (bfd_vma) -1;
6444 *local_got = allocate_got (htab, need);
6445 if (bfd_link_pic (info))
6447 asection *srel = htab->elf.srelgot;
6448 if ((*lgot_masks & PLT_IFUNC) != 0)
6449 srel = htab->elf.irelplt;
6450 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6455 *local_got = (bfd_vma) -1;
6457 if (htab->is_vxworks)
6460 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6461 for (; local_plt < end_local_plt; ++local_plt)
6463 struct plt_entry *ent;
6464 bfd_boolean doneone = FALSE;
6465 bfd_vma plt_offset = 0, glink_offset = 0;
6467 for (ent = *local_plt; ent != NULL; ent = ent->next)
6468 if (ent->plt.refcount > 0)
6474 plt_offset = s->size;
6477 ent->plt.offset = plt_offset;
6480 if (!doneone || bfd_link_pic (info))
6482 glink_offset = s->size;
6483 s->size += GLINK_ENTRY_SIZE;
6485 ent->glink_offset = glink_offset;
6489 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6494 ent->plt.offset = (bfd_vma) -1;
6498 /* Allocate space for global sym dynamic relocs. */
6499 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6501 if (htab->tlsld_got.refcount > 0)
6503 htab->tlsld_got.offset = allocate_got (htab, 8);
6504 if (bfd_link_pic (info))
6505 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
6508 htab->tlsld_got.offset = (bfd_vma) -1;
6510 if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS)
6512 unsigned int g_o_t = 32768;
6514 /* If we haven't allocated the header, do so now. When we get here,
6515 for old plt/got the got size will be 0 to 32764 (not allocated),
6516 or 32780 to 65536 (header allocated). For new plt/got, the
6517 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6518 if (htab->elf.sgot->size <= 32768)
6520 g_o_t = htab->elf.sgot->size;
6521 if (htab->plt_type == PLT_OLD)
6523 htab->elf.sgot->size += htab->got_header_size;
6526 htab->elf.hgot->root.u.def.value = g_o_t;
6528 if (bfd_link_pic (info))
6530 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6532 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6533 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6535 if (info->emitrelocations)
6537 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6539 if (sda != NULL && sda->ref_regular)
6540 sda->root.u.def.section->flags |= SEC_KEEP;
6541 sda = htab->sdata[1].sym;
6542 if (sda != NULL && sda->ref_regular)
6543 sda->root.u.def.section->flags |= SEC_KEEP;
6546 if (htab->glink != NULL
6547 && htab->glink->size != 0
6548 && htab->elf.dynamic_sections_created)
6550 htab->glink_pltresolve = htab->glink->size;
6551 /* Space for the branch table. ??? We don't need entries for
6552 non-dynamic symbols in this table. This case can arise with
6553 static ifuncs or forced local ifuncs. */
6554 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6555 /* Pad out to align the start of PLTresolve. */
6556 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6558 htab->glink->size += GLINK_PLTRESOLVE;
6560 if (htab->params->emit_stub_syms)
6562 struct elf_link_hash_entry *sh;
6563 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6564 TRUE, FALSE, FALSE);
6567 if (sh->root.type == bfd_link_hash_new)
6569 sh->root.type = bfd_link_hash_defined;
6570 sh->root.u.def.section = htab->glink;
6571 sh->root.u.def.value = htab->glink_pltresolve;
6572 sh->ref_regular = 1;
6573 sh->def_regular = 1;
6574 sh->ref_regular_nonweak = 1;
6575 sh->forced_local = 1;
6577 sh->root.linker_def = 1;
6579 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6580 TRUE, FALSE, FALSE);
6583 if (sh->root.type == bfd_link_hash_new)
6585 sh->root.type = bfd_link_hash_defined;
6586 sh->root.u.def.section = htab->glink;
6587 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6588 sh->ref_regular = 1;
6589 sh->def_regular = 1;
6590 sh->ref_regular_nonweak = 1;
6591 sh->forced_local = 1;
6593 sh->root.linker_def = 1;
6598 if (htab->glink != NULL
6599 && htab->glink->size != 0
6600 && htab->glink_eh_frame != NULL
6601 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6602 && _bfd_elf_eh_frame_present (info))
6604 s = htab->glink_eh_frame;
6605 s->size = sizeof (glink_eh_frame_cie) + 20;
6606 if (bfd_link_pic (info))
6609 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6614 /* We've now determined the sizes of the various dynamic sections.
6615 Allocate memory for them. */
6617 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6619 bfd_boolean strip_section = TRUE;
6621 if ((s->flags & SEC_LINKER_CREATED) == 0)
6624 if (s == htab->elf.splt
6625 || s == htab->elf.sgot)
6627 /* We'd like to strip these sections if they aren't needed, but if
6628 we've exported dynamic symbols from them we must leave them.
6629 It's too late to tell BFD to get rid of the symbols. */
6630 if (htab->elf.hplt != NULL)
6631 strip_section = FALSE;
6632 /* Strip this section if we don't need it; see the
6635 else if (s == htab->elf.iplt
6637 || s == htab->glink_eh_frame
6638 || s == htab->elf.sgotplt
6640 || s == htab->elf.sdynbss
6641 || s == htab->elf.sdynrelro
6642 || s == htab->dynsbss)
6644 /* Strip these too. */
6646 else if (s == htab->sdata[0].section
6647 || s == htab->sdata[1].section)
6649 strip_section = (s->flags & SEC_KEEP) == 0;
6651 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6656 /* Remember whether there are any relocation sections. */
6659 /* We use the reloc_count field as a counter if we need
6660 to copy relocs into the output file. */
6666 /* It's not one of our sections, so don't allocate space. */
6670 if (s->size == 0 && strip_section)
6672 /* If we don't need this section, strip it from the
6673 output file. This is mostly to handle .rela.bss and
6674 .rela.plt. We must create both sections in
6675 create_dynamic_sections, because they must be created
6676 before the linker maps input sections to output
6677 sections. The linker does that before
6678 adjust_dynamic_symbol is called, and it is that
6679 function which decides whether anything needs to go
6680 into these sections. */
6681 s->flags |= SEC_EXCLUDE;
6685 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6688 /* Allocate memory for the section contents. */
6689 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6690 if (s->contents == NULL)
6694 if (htab->elf.dynamic_sections_created)
6696 /* Add some entries to the .dynamic section. We fill in the
6697 values later, in ppc_elf_finish_dynamic_sections, but we
6698 must add the entries now so that we get the correct size for
6699 the .dynamic section. The DT_DEBUG entry is filled in by the
6700 dynamic linker and used by the debugger. */
6701 #define add_dynamic_entry(TAG, VAL) \
6702 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6704 if (bfd_link_executable (info))
6706 if (!add_dynamic_entry (DT_DEBUG, 0))
6710 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
6712 if (!add_dynamic_entry (DT_PLTGOT, 0)
6713 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6714 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6715 || !add_dynamic_entry (DT_JMPREL, 0))
6719 if (htab->plt_type == PLT_NEW
6720 && htab->glink != NULL
6721 && htab->glink->size != 0)
6723 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6725 if (!htab->params->no_tls_get_addr_opt
6726 && htab->tls_get_addr != NULL
6727 && htab->tls_get_addr->plt.plist != NULL
6728 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6734 if (!add_dynamic_entry (DT_RELA, 0)
6735 || !add_dynamic_entry (DT_RELASZ, 0)
6736 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6740 /* If any dynamic relocs apply to a read-only section, then we
6741 need a DT_TEXTREL entry. */
6742 if ((info->flags & DF_TEXTREL) == 0)
6743 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6746 if ((info->flags & DF_TEXTREL) != 0)
6748 if (!add_dynamic_entry (DT_TEXTREL, 0))
6751 if (htab->is_vxworks
6752 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6755 #undef add_dynamic_entry
6757 if (htab->glink_eh_frame != NULL
6758 && htab->glink_eh_frame->contents != NULL)
6760 unsigned char *p = htab->glink_eh_frame->contents;
6763 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6764 /* CIE length (rewrite in case little-endian). */
6765 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6766 p += sizeof (glink_eh_frame_cie);
6768 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6769 bfd_put_32 (htab->elf.dynobj, val, p);
6772 val = p - htab->glink_eh_frame->contents;
6773 bfd_put_32 (htab->elf.dynobj, val, p);
6775 /* Offset to .glink. Set later. */
6778 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6783 if (bfd_link_pic (info)
6784 && htab->elf.dynamic_sections_created)
6786 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6788 *p++ = DW_CFA_advance_loc + adv;
6791 *p++ = DW_CFA_advance_loc1;
6794 else if (adv < 65536)
6796 *p++ = DW_CFA_advance_loc2;
6797 bfd_put_16 (htab->elf.dynobj, adv, p);
6802 *p++ = DW_CFA_advance_loc4;
6803 bfd_put_32 (htab->elf.dynobj, adv, p);
6806 *p++ = DW_CFA_register;
6809 *p++ = DW_CFA_advance_loc + 4;
6810 *p++ = DW_CFA_restore_extended;
6813 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6814 == htab->glink_eh_frame->size);
6820 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6821 if it looks like nothing is using them. */
6824 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6826 struct elf_link_hash_entry *sda = lsect->sym;
6828 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6832 s = bfd_get_section_by_name (output_bfd, lsect->name);
6833 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6835 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6836 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6838 sda->def_regular = 0;
6839 /* This is somewhat magic. See elf_link_output_extsym. */
6840 sda->ref_dynamic = 1;
6841 sda->forced_local = 0;
6848 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6850 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6854 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6855 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6860 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6863 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6865 if (h->plt.plist != NULL
6867 && (!h->pointer_equality_needed
6868 || !h->ref_regular_nonweak))
6871 return _bfd_elf_hash_symbol (h);
6874 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6876 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6877 used for some functions that are allowed to break the ABI). */
6878 static const int shared_stub_entry[] =
6880 0x7c0802a6, /* mflr 0 */
6881 0x429f0005, /* bcl 20, 31, .Lxxx */
6882 0x7d8802a6, /* mflr 12 */
6883 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6884 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6885 0x7c0803a6, /* mtlr 0 */
6886 0x7d8903a6, /* mtctr 12 */
6887 0x4e800420, /* bctr */
6890 static const int stub_entry[] =
6892 0x3d800000, /* lis 12,xxx@ha */
6893 0x398c0000, /* addi 12,12,xxx@l */
6894 0x7d8903a6, /* mtctr 12 */
6895 0x4e800420, /* bctr */
6898 struct ppc_elf_relax_info
6900 unsigned int workaround_size;
6901 unsigned int picfixup_size;
6904 /* This function implements long branch trampolines, and the ppc476
6905 icache bug workaround. Any section needing trampolines or patch
6906 space for the workaround has its size extended so that we can
6907 add trampolines at the end of the section. */
6910 ppc_elf_relax_section (bfd *abfd,
6912 struct bfd_link_info *link_info,
6915 struct one_branch_fixup
6917 struct one_branch_fixup *next;
6919 /* Final link, can use the symbol offset. For a
6920 relocatable link we use the symbol's index. */
6925 Elf_Internal_Shdr *symtab_hdr;
6926 bfd_byte *contents = NULL;
6927 Elf_Internal_Sym *isymbuf = NULL;
6928 Elf_Internal_Rela *internal_relocs = NULL;
6929 Elf_Internal_Rela *irel, *irelend = NULL;
6930 struct one_branch_fixup *branch_fixups = NULL;
6931 struct ppc_elf_relax_info *relax_info = NULL;
6932 unsigned changes = 0;
6933 bfd_boolean workaround_change;
6934 struct ppc_elf_link_hash_table *htab;
6935 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6937 bfd_boolean maybe_pasted;
6941 /* No need to do anything with non-alloc or non-code sections. */
6942 if ((isec->flags & SEC_ALLOC) == 0
6943 || (isec->flags & SEC_CODE) == 0
6944 || (isec->flags & SEC_LINKER_CREATED) != 0
6948 /* We cannot represent the required PIC relocs in the output, so don't
6949 do anything. The linker doesn't support mixing -shared and -r
6951 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6954 htab = ppc_elf_hash_table (link_info);
6958 isec->size = (isec->size + 3) & -4;
6959 if (isec->rawsize == 0)
6960 isec->rawsize = isec->size;
6961 trampbase = isec->size;
6963 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6964 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6965 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6967 if (htab->params->ppc476_workaround
6968 || htab->params->pic_fixup > 0)
6970 if (elf_section_data (isec)->sec_info == NULL)
6972 elf_section_data (isec)->sec_info
6973 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6974 if (elf_section_data (isec)->sec_info == NULL)
6977 relax_info = elf_section_data (isec)->sec_info;
6978 trampbase -= relax_info->workaround_size;
6981 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6982 || strcmp (isec->output_section->name, ".fini") == 0);
6983 /* Space for a branch around any trampolines. */
6984 trampoff = trampbase;
6985 if (maybe_pasted && trampbase == isec->rawsize)
6988 symtab_hdr = &elf_symtab_hdr (abfd);
6990 if (htab->params->branch_trampolines
6991 || htab->params->pic_fixup > 0)
6993 /* Get a copy of the native relocations. */
6994 if (isec->reloc_count != 0)
6996 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6997 link_info->keep_memory);
6998 if (internal_relocs == NULL)
7002 got2 = bfd_get_section_by_name (abfd, ".got2");
7004 irelend = internal_relocs + isec->reloc_count;
7005 for (irel = internal_relocs; irel < irelend; irel++)
7007 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
7010 struct one_branch_fixup *f;
7011 size_t insn_offset = 0;
7012 bfd_vma max_branch_offset = 0, val;
7015 struct elf_link_hash_entry *h;
7016 struct plt_entry **plist;
7017 unsigned char sym_type;
7022 case R_PPC_LOCAL24PC:
7023 case R_PPC_PLTREL24:
7024 max_branch_offset = 1 << 25;
7028 case R_PPC_REL14_BRTAKEN:
7029 case R_PPC_REL14_BRNTAKEN:
7030 max_branch_offset = 1 << 15;
7033 case R_PPC_ADDR16_HA:
7034 if (htab->params->pic_fixup > 0)
7042 /* Get the value of the symbol referred to by the reloc. */
7044 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
7046 /* A local symbol. */
7047 Elf_Internal_Sym *isym;
7049 /* Read this BFD's local symbols. */
7050 if (isymbuf == NULL)
7052 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
7053 if (isymbuf == NULL)
7054 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
7055 symtab_hdr->sh_info, 0,
7060 isym = isymbuf + ELF32_R_SYM (irel->r_info);
7061 if (isym->st_shndx == SHN_UNDEF)
7062 tsec = bfd_und_section_ptr;
7063 else if (isym->st_shndx == SHN_ABS)
7064 tsec = bfd_abs_section_ptr;
7065 else if (isym->st_shndx == SHN_COMMON)
7066 tsec = bfd_com_section_ptr;
7068 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7070 toff = isym->st_value;
7071 sym_type = ELF_ST_TYPE (isym->st_info);
7075 /* Global symbol handling. */
7078 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
7079 h = elf_sym_hashes (abfd)[indx];
7081 while (h->root.type == bfd_link_hash_indirect
7082 || h->root.type == bfd_link_hash_warning)
7083 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7085 if (h->root.type == bfd_link_hash_defined
7086 || h->root.type == bfd_link_hash_defweak)
7088 tsec = h->root.u.def.section;
7089 toff = h->root.u.def.value;
7091 else if (h->root.type == bfd_link_hash_undefined
7092 || h->root.type == bfd_link_hash_undefweak)
7094 tsec = bfd_und_section_ptr;
7095 toff = bfd_link_relocatable (link_info) ? indx : 0;
7100 /* If this branch is to __tls_get_addr then we may later
7101 optimise away the call. We won't be needing a long-
7102 branch stub in that case. */
7103 if (bfd_link_executable (link_info)
7104 && h == htab->tls_get_addr
7105 && irel != internal_relocs)
7107 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
7108 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
7109 unsigned int tls_mask = 0;
7111 /* The previous reloc should be one of R_PPC_TLSGD or
7112 R_PPC_TLSLD, or for older object files, a reloc
7113 on the __tls_get_addr arg setup insn. Get tls
7114 mask bits from the symbol on that reloc. */
7115 if (t_symndx < symtab_hdr->sh_info)
7117 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7119 if (local_got_offsets != NULL)
7121 struct plt_entry **local_plt = (struct plt_entry **)
7122 (local_got_offsets + symtab_hdr->sh_info);
7123 char *lgot_masks = (char *)
7124 (local_plt + symtab_hdr->sh_info);
7125 tls_mask = lgot_masks[t_symndx];
7130 struct elf_link_hash_entry *th
7131 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
7133 while (th->root.type == bfd_link_hash_indirect
7134 || th->root.type == bfd_link_hash_warning)
7135 th = (struct elf_link_hash_entry *) th->root.u.i.link;
7138 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7141 /* The mask bits tell us if the call will be
7143 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7144 && (t_rtype == R_PPC_TLSGD
7145 || t_rtype == R_PPC_GOT_TLSGD16
7146 || t_rtype == R_PPC_GOT_TLSGD16_LO))
7148 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7149 && (t_rtype == R_PPC_TLSLD
7150 || t_rtype == R_PPC_GOT_TLSLD16
7151 || t_rtype == R_PPC_GOT_TLSLD16_LO))
7158 if (r_type == R_PPC_ADDR16_HA)
7163 && ppc_elf_hash_entry (h)->has_addr16_ha
7164 && ppc_elf_hash_entry (h)->has_addr16_lo)
7165 picfixup_size += 12;
7169 /* The condition here under which we call find_plt_ent must
7170 match that in relocate_section. If we call find_plt_ent here
7171 but not in relocate_section, or vice versa, then the branch
7172 destination used here may be incorrect. */
7176 /* We know is_branch_reloc (r_type) is true. */
7177 if (h->type == STT_GNU_IFUNC
7178 || r_type == R_PPC_PLTREL24)
7179 plist = &h->plt.plist;
7181 else if (sym_type == STT_GNU_IFUNC
7182 && elf_local_got_offsets (abfd) != NULL)
7184 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7185 struct plt_entry **local_plt = (struct plt_entry **)
7186 (local_got_offsets + symtab_hdr->sh_info);
7187 plist = local_plt + ELF32_R_SYM (irel->r_info);
7192 struct plt_entry *ent;
7194 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
7195 addend = irel->r_addend;
7196 ent = find_plt_ent (plist, got2, addend);
7199 if (htab->plt_type == PLT_NEW
7201 || !htab->elf.dynamic_sections_created
7202 || h->dynindx == -1)
7205 toff = ent->glink_offset;
7209 tsec = htab->elf.splt;
7210 toff = ent->plt.offset;
7215 /* If the branch and target are in the same section, you have
7216 no hope of adding stubs. We'll error out later should the
7221 /* There probably isn't any reason to handle symbols in
7222 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7223 attribute for a code section, and we are only looking at
7224 branches. However, implement it correctly here as a
7225 reference for other target relax_section functions. */
7226 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7228 /* At this stage in linking, no SEC_MERGE symbol has been
7229 adjusted, so all references to such symbols need to be
7230 passed through _bfd_merged_section_offset. (Later, in
7231 relocate_section, all SEC_MERGE symbols *except* for
7232 section symbols have been adjusted.)
7234 gas may reduce relocations against symbols in SEC_MERGE
7235 sections to a relocation against the section symbol when
7236 the original addend was zero. When the reloc is against
7237 a section symbol we should include the addend in the
7238 offset passed to _bfd_merged_section_offset, since the
7239 location of interest is the original symbol. On the
7240 other hand, an access to "sym+addend" where "sym" is not
7241 a section symbol should not include the addend; Such an
7242 access is presumed to be an offset from "sym"; The
7243 location of interest is just "sym". */
7244 if (sym_type == STT_SECTION)
7245 toff += irel->r_addend;
7248 = _bfd_merged_section_offset (abfd, &tsec,
7249 elf_section_data (tsec)->sec_info,
7252 if (sym_type != STT_SECTION)
7253 toff += irel->r_addend;
7255 /* PLTREL24 addends are special. */
7256 else if (r_type != R_PPC_PLTREL24)
7257 toff += irel->r_addend;
7259 /* Attempted -shared link of non-pic code loses. */
7260 if ((!bfd_link_relocatable (link_info)
7261 && tsec == bfd_und_section_ptr)
7262 || tsec->output_section == NULL
7263 || (tsec->owner != NULL
7264 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7267 roff = irel->r_offset;
7269 /* If the branch is in range, no need to do anything. */
7270 if (tsec != bfd_und_section_ptr
7271 && (!bfd_link_relocatable (link_info)
7272 /* A relocatable link may have sections moved during
7273 final link, so do not presume they remain in range. */
7274 || tsec->output_section == isec->output_section))
7276 bfd_vma symaddr, reladdr;
7278 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7279 reladdr = isec->output_section->vma + isec->output_offset + roff;
7280 if (symaddr - reladdr + max_branch_offset
7281 < 2 * max_branch_offset)
7285 /* Look for an existing fixup to this address. */
7286 for (f = branch_fixups; f ; f = f->next)
7287 if (f->tsec == tsec && f->toff == toff)
7293 unsigned long stub_rtype;
7295 val = trampoff - roff;
7296 if (val >= max_branch_offset)
7297 /* Oh dear, we can't reach a trampoline. Don't try to add
7298 one. We'll report an error later. */
7301 if (bfd_link_pic (link_info))
7303 size = 4 * ARRAY_SIZE (shared_stub_entry);
7308 size = 4 * ARRAY_SIZE (stub_entry);
7311 stub_rtype = R_PPC_RELAX;
7312 if (tsec == htab->elf.splt
7313 || tsec == htab->glink)
7315 stub_rtype = R_PPC_RELAX_PLT;
7316 if (r_type == R_PPC_PLTREL24)
7317 stub_rtype = R_PPC_RELAX_PLTREL24;
7320 /* Hijack the old relocation. Since we need two
7321 relocations for this use a "composite" reloc. */
7322 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7324 irel->r_offset = trampoff + insn_offset;
7325 if (r_type == R_PPC_PLTREL24
7326 && stub_rtype != R_PPC_RELAX_PLTREL24)
7329 /* Record the fixup so we don't do it again this section. */
7330 f = bfd_malloc (sizeof (*f));
7331 f->next = branch_fixups;
7334 f->trampoff = trampoff;
7342 val = f->trampoff - roff;
7343 if (val >= max_branch_offset)
7346 /* Nop out the reloc, since we're finalizing things here. */
7347 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7350 /* Get the section contents. */
7351 if (contents == NULL)
7353 /* Get cached copy if it exists. */
7354 if (elf_section_data (isec)->this_hdr.contents != NULL)
7355 contents = elf_section_data (isec)->this_hdr.contents;
7356 /* Go get them off disk. */
7357 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7361 /* Fix up the existing branch to hit the trampoline. */
7362 hit_addr = contents + roff;
7366 case R_PPC_LOCAL24PC:
7367 case R_PPC_PLTREL24:
7368 t0 = bfd_get_32 (abfd, hit_addr);
7370 t0 |= val & 0x3fffffc;
7371 bfd_put_32 (abfd, t0, hit_addr);
7375 case R_PPC_REL14_BRTAKEN:
7376 case R_PPC_REL14_BRNTAKEN:
7377 t0 = bfd_get_32 (abfd, hit_addr);
7380 bfd_put_32 (abfd, t0, hit_addr);
7385 while (branch_fixups != NULL)
7387 struct one_branch_fixup *f = branch_fixups;
7388 branch_fixups = branch_fixups->next;
7393 workaround_change = FALSE;
7395 if (htab->params->ppc476_workaround
7396 && (!bfd_link_relocatable (link_info)
7397 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7399 bfd_vma addr, end_addr;
7400 unsigned int crossings;
7401 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7403 addr = isec->output_section->vma + isec->output_offset;
7404 end_addr = addr + trampoff;
7406 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7409 /* Keep space aligned, to ensure the patch code itself does
7410 not cross a page. Don't decrease size calculated on a
7411 previous pass as otherwise we might never settle on a layout. */
7412 newsize = 15 - ((end_addr - 1) & 15);
7413 newsize += crossings * 16;
7414 if (relax_info->workaround_size < newsize)
7416 relax_info->workaround_size = newsize;
7417 workaround_change = TRUE;
7419 /* Ensure relocate_section is called. */
7420 isec->flags |= SEC_RELOC;
7422 newsize = trampoff + relax_info->workaround_size;
7425 if (htab->params->pic_fixup > 0)
7427 picfixup_size -= relax_info->picfixup_size;
7428 if (picfixup_size != 0)
7429 relax_info->picfixup_size += picfixup_size;
7430 newsize += relax_info->picfixup_size;
7433 if (changes != 0 || picfixup_size != 0 || workaround_change)
7434 isec->size = newsize;
7437 && symtab_hdr->contents != (unsigned char *) isymbuf)
7439 if (! link_info->keep_memory)
7443 /* Cache the symbols for elf_link_input_bfd. */
7444 symtab_hdr->contents = (unsigned char *) isymbuf;
7448 if (contents != NULL
7449 && elf_section_data (isec)->this_hdr.contents != contents)
7451 if (!changes && !link_info->keep_memory)
7455 /* Cache the section contents for elf_link_input_bfd. */
7456 elf_section_data (isec)->this_hdr.contents = contents;
7460 changes += picfixup_size;
7463 /* Append sufficient NOP relocs so we can write out relocation
7464 information for the trampolines. */
7465 Elf_Internal_Shdr *rel_hdr;
7466 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7467 * sizeof (*new_relocs));
7472 memcpy (new_relocs, internal_relocs,
7473 isec->reloc_count * sizeof (*new_relocs));
7474 for (ix = changes; ix--;)
7476 irel = new_relocs + ix + isec->reloc_count;
7478 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7480 if (internal_relocs != elf_section_data (isec)->relocs)
7481 free (internal_relocs);
7482 elf_section_data (isec)->relocs = new_relocs;
7483 isec->reloc_count += changes;
7484 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7485 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7487 else if (internal_relocs != NULL
7488 && elf_section_data (isec)->relocs != internal_relocs)
7489 free (internal_relocs);
7491 *again = changes != 0 || workaround_change;
7495 while (branch_fixups != NULL)
7497 struct one_branch_fixup *f = branch_fixups;
7498 branch_fixups = branch_fixups->next;
7501 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7503 if (contents != NULL
7504 && elf_section_data (isec)->this_hdr.contents != contents)
7506 if (internal_relocs != NULL
7507 && elf_section_data (isec)->relocs != internal_relocs)
7508 free (internal_relocs);
7512 /* What to do when ld finds relocations against symbols defined in
7513 discarded sections. */
7516 ppc_elf_action_discarded (asection *sec)
7518 if (strcmp (".fixup", sec->name) == 0)
7521 if (strcmp (".got2", sec->name) == 0)
7524 return _bfd_elf_default_action_discarded (sec);
7527 /* Fill in the address for a pointer generated in a linker section. */
7530 elf_finish_pointer_linker_section (bfd *input_bfd,
7531 elf_linker_section_t *lsect,
7532 struct elf_link_hash_entry *h,
7534 const Elf_Internal_Rela *rel)
7536 elf_linker_section_pointers_t *linker_section_ptr;
7538 BFD_ASSERT (lsect != NULL);
7542 /* Handle global symbol. */
7543 struct ppc_elf_link_hash_entry *eh;
7545 eh = (struct ppc_elf_link_hash_entry *) h;
7546 BFD_ASSERT (eh->elf.def_regular);
7547 linker_section_ptr = eh->linker_section_pointer;
7551 /* Handle local symbol. */
7552 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7554 BFD_ASSERT (is_ppc_elf (input_bfd));
7555 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7556 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7559 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7562 BFD_ASSERT (linker_section_ptr != NULL);
7564 /* Offset will always be a multiple of four, so use the bottom bit
7565 as a "written" flag. */
7566 if ((linker_section_ptr->offset & 1) == 0)
7568 bfd_put_32 (lsect->section->owner,
7569 relocation + linker_section_ptr->addend,
7570 lsect->section->contents + linker_section_ptr->offset);
7571 linker_section_ptr->offset += 1;
7574 relocation = (lsect->section->output_section->vma
7575 + lsect->section->output_offset
7576 + linker_section_ptr->offset - 1
7577 - SYM_VAL (lsect->sym));
7581 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7582 lsect->name, (long) relocation, (long) relocation);
7588 #define PPC_LO(v) ((v) & 0xffff)
7589 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7590 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7593 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7594 struct bfd_link_info *info)
7596 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7597 bfd *output_bfd = info->output_bfd;
7600 plt = ((ent->plt.offset & ~1)
7601 + plt_sec->output_section->vma
7602 + plt_sec->output_offset);
7604 if (bfd_link_pic (info))
7608 if (ent->addend >= 32768)
7610 + ent->sec->output_section->vma
7611 + ent->sec->output_offset);
7612 else if (htab->elf.hgot != NULL)
7613 got = SYM_VAL (htab->elf.hgot);
7617 if (plt + 0x8000 < 0x10000)
7619 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7621 bfd_put_32 (output_bfd, MTCTR_11, p);
7623 bfd_put_32 (output_bfd, BCTR, p);
7625 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7630 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7632 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7634 bfd_put_32 (output_bfd, MTCTR_11, p);
7636 bfd_put_32 (output_bfd, BCTR, p);
7642 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7644 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7646 bfd_put_32 (output_bfd, MTCTR_11, p);
7648 bfd_put_32 (output_bfd, BCTR, p);
7653 /* Return true if symbol is defined statically. */
7656 is_static_defined (struct elf_link_hash_entry *h)
7658 return ((h->root.type == bfd_link_hash_defined
7659 || h->root.type == bfd_link_hash_defweak)
7660 && h->root.u.def.section != NULL
7661 && h->root.u.def.section->output_section != NULL);
7664 /* If INSN is an opcode that may be used with an @tls operand, return
7665 the transformed insn for TLS optimisation, otherwise return 0. If
7666 REG is non-zero only match an insn with RB or RA equal to REG. */
7669 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7673 if ((insn & (0x3f << 26)) != 31 << 26)
7676 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7677 rtra = insn & ((1 << 26) - (1 << 16));
7678 else if (((insn >> 16) & 0x1f) == reg)
7679 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7683 if ((insn & (0x3ff << 1)) == 266 << 1)
7686 else if ((insn & (0x1f << 1)) == 23 << 1
7687 && ((insn & (0x1f << 6)) < 14 << 6
7688 || ((insn & (0x1f << 6)) >= 16 << 6
7689 && (insn & (0x1f << 6)) < 24 << 6)))
7690 /* load and store indexed -> dform. */
7691 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7692 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7693 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7694 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7695 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7697 insn = (58 << 26) | 2;
7704 /* If INSN is an opcode that may be used with an @tprel operand, return
7705 the transformed insn for an undefined weak symbol, ie. with the
7706 thread pointer REG operand removed. Otherwise return 0. */
7709 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7711 if ((insn & (0x1f << 16)) == reg << 16
7712 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7713 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7714 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7715 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7716 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7717 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7718 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7719 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7720 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7721 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7722 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7723 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7724 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7725 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7726 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7727 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7729 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7730 && ((insn & 3) == 0 || (insn & 3) == 3))))
7732 insn &= ~(0x1f << 16);
7734 else if ((insn & (0x1f << 21)) == reg << 21
7735 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7736 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7737 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7739 insn &= ~(0x1f << 21);
7740 insn |= (insn & (0x1f << 16)) << 5;
7741 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7742 insn -= 2 >> 26; /* convert to ori,oris */
7750 is_insn_ds_form (unsigned int insn)
7752 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7753 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7754 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7755 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7759 is_insn_dq_form (unsigned int insn)
7761 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7762 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7763 && (insn & 3) == 1));
7766 /* The RELOCATE_SECTION function is called by the ELF backend linker
7767 to handle the relocations for a section.
7769 The relocs are always passed as Rela structures; if the section
7770 actually uses Rel structures, the r_addend field will always be
7773 This function is responsible for adjust the section contents as
7774 necessary, and (if using Rela relocs and generating a
7775 relocatable output file) adjusting the reloc addend as
7778 This function does not have to worry about setting the reloc
7779 address or the reloc symbol index.
7781 LOCAL_SYMS is a pointer to the swapped in local symbols.
7783 LOCAL_SECTIONS is an array giving the section in the input file
7784 corresponding to the st_shndx field of each local symbol.
7786 The global hash table entry for the global symbols can be found
7787 via elf_sym_hashes (input_bfd).
7789 When generating relocatable output, this function must handle
7790 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7791 going to be the section symbol corresponding to the output
7792 section, which means that the addend must be adjusted
7796 ppc_elf_relocate_section (bfd *output_bfd,
7797 struct bfd_link_info *info,
7799 asection *input_section,
7801 Elf_Internal_Rela *relocs,
7802 Elf_Internal_Sym *local_syms,
7803 asection **local_sections)
7805 Elf_Internal_Shdr *symtab_hdr;
7806 struct elf_link_hash_entry **sym_hashes;
7807 struct ppc_elf_link_hash_table *htab;
7808 Elf_Internal_Rela *rel;
7809 Elf_Internal_Rela *wrel;
7810 Elf_Internal_Rela *relend;
7811 Elf_Internal_Rela outrel;
7813 bfd_vma *local_got_offsets;
7814 bfd_boolean ret = TRUE;
7815 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
7816 bfd_boolean is_vxworks_tls;
7817 unsigned int picfixup_size = 0;
7818 struct ppc_elf_relax_info *relax_info = NULL;
7821 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7822 "%ld relocations%s",
7823 input_bfd, input_section,
7824 (long) input_section->reloc_count,
7825 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7828 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7830 /* Initialize howto table if not already done. */
7831 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7832 ppc_elf_howto_init ();
7834 htab = ppc_elf_hash_table (info);
7835 local_got_offsets = elf_local_got_offsets (input_bfd);
7836 symtab_hdr = &elf_symtab_hdr (input_bfd);
7837 sym_hashes = elf_sym_hashes (input_bfd);
7838 /* We have to handle relocations in vxworks .tls_vars sections
7839 specially, because the dynamic loader is 'weird'. */
7840 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7841 && !strcmp (input_section->output_section->name,
7843 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7844 relax_info = elf_section_data (input_section)->sec_info;
7845 rel = wrel = relocs;
7846 relend = relocs + input_section->reloc_count;
7847 for (; rel < relend; wrel++, rel++)
7849 enum elf_ppc_reloc_type r_type;
7851 bfd_reloc_status_type r;
7852 Elf_Internal_Sym *sym;
7854 struct elf_link_hash_entry *h;
7855 const char *sym_name;
7856 reloc_howto_type *howto;
7857 unsigned long r_symndx;
7859 bfd_vma branch_bit, from;
7860 bfd_boolean unresolved_reloc;
7862 unsigned int tls_type, tls_mask, tls_gd;
7863 struct plt_entry **ifunc;
7864 struct reloc_howto_struct alt_howto;
7867 r_type = ELF32_R_TYPE (rel->r_info);
7871 unresolved_reloc = FALSE;
7873 r_symndx = ELF32_R_SYM (rel->r_info);
7875 if (r_symndx < symtab_hdr->sh_info)
7877 sym = local_syms + r_symndx;
7878 sec = local_sections[r_symndx];
7879 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7881 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7885 bfd_boolean ignored;
7887 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7888 r_symndx, symtab_hdr, sym_hashes,
7890 unresolved_reloc, warned, ignored);
7892 sym_name = h->root.root.string;
7895 if (sec != NULL && discarded_section (sec))
7897 /* For relocs against symbols from removed linkonce sections,
7898 or sections discarded by a linker script, we just want the
7899 section contents zeroed. Avoid any special processing. */
7901 if (r_type < R_PPC_max)
7902 howto = ppc_elf_howto_table[r_type];
7904 _bfd_clear_contents (howto, input_bfd, input_section,
7905 contents + rel->r_offset);
7906 wrel->r_offset = rel->r_offset;
7910 /* For ld -r, remove relocations in debug sections against
7911 sections defined in discarded sections. Not done for
7912 non-debug to preserve relocs in .eh_frame which the
7913 eh_frame editing code expects to be present. */
7914 if (bfd_link_relocatable (info)
7915 && (input_section->flags & SEC_DEBUGGING))
7921 if (bfd_link_relocatable (info))
7924 && r_type == R_PPC_PLTREL24
7925 && rel->r_addend != 0)
7927 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7928 addend specifies the GOT pointer offset within .got2. */
7929 rel->r_addend += got2->output_offset;
7931 if (r_type != R_PPC_RELAX_PLT
7932 && r_type != R_PPC_RELAX_PLTREL24
7933 && r_type != R_PPC_RELAX)
7937 /* TLS optimizations. Replace instruction sequences and relocs
7938 based on information we collected in tls_optimize. We edit
7939 RELOCS so that --emit-relocs will output something sensible
7940 for the final instruction stream. */
7944 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7945 else if (local_got_offsets != NULL)
7947 struct plt_entry **local_plt;
7950 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7951 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7952 tls_mask = lgot_masks[r_symndx];
7955 /* Ensure reloc mapping code below stays sane. */
7956 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7957 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7958 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7959 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7960 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7961 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7962 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7963 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7970 case R_PPC_GOT_TPREL16:
7971 case R_PPC_GOT_TPREL16_LO:
7972 if ((tls_mask & TLS_TLS) != 0
7973 && (tls_mask & TLS_TPREL) == 0)
7977 insn = bfd_get_32 (input_bfd,
7978 contents + rel->r_offset - d_offset);
7980 insn |= 0x3c020000; /* addis 0,2,0 */
7981 bfd_put_32 (input_bfd, insn,
7982 contents + rel->r_offset - d_offset);
7983 r_type = R_PPC_TPREL16_HA;
7984 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7989 if ((tls_mask & TLS_TLS) != 0
7990 && (tls_mask & TLS_TPREL) == 0)
7994 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7995 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7998 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
7999 r_type = R_PPC_TPREL16_LO;
8000 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8002 /* Was PPC_TLS which sits on insn boundary, now
8003 PPC_TPREL16_LO which is at low-order half-word. */
8004 rel->r_offset += d_offset;
8008 case R_PPC_GOT_TLSGD16_HI:
8009 case R_PPC_GOT_TLSGD16_HA:
8010 tls_gd = TLS_TPRELGD;
8011 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8015 case R_PPC_GOT_TLSLD16_HI:
8016 case R_PPC_GOT_TLSLD16_HA:
8017 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8020 if ((tls_mask & tls_gd) != 0)
8021 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8022 + R_PPC_GOT_TPREL16);
8025 rel->r_offset -= d_offset;
8026 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
8027 r_type = R_PPC_NONE;
8029 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8033 case R_PPC_GOT_TLSGD16:
8034 case R_PPC_GOT_TLSGD16_LO:
8035 tls_gd = TLS_TPRELGD;
8036 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8040 case R_PPC_GOT_TLSLD16:
8041 case R_PPC_GOT_TLSLD16_LO:
8042 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8044 unsigned int insn1, insn2;
8048 offset = (bfd_vma) -1;
8049 /* If not using the newer R_PPC_TLSGD/LD to mark
8050 __tls_get_addr calls, we must trust that the call
8051 stays with its arg setup insns, ie. that the next
8052 reloc is the __tls_get_addr call associated with
8053 the current reloc. Edit both insns. */
8054 if (input_section->has_tls_get_addr_call
8056 && branch_reloc_hash_match (input_bfd, rel + 1,
8057 htab->tls_get_addr))
8058 offset = rel[1].r_offset;
8059 /* We read the low GOT_TLS insn because we need to keep
8060 the destination reg. It may be something other than
8061 the usual r3, and moved to r3 before the call by
8062 intervening code. */
8063 insn1 = bfd_get_32 (input_bfd,
8064 contents + rel->r_offset - d_offset);
8065 if ((tls_mask & tls_gd) != 0)
8068 insn1 &= (0x1f << 21) | (0x1f << 16);
8069 insn1 |= 32 << 26; /* lwz */
8070 if (offset != (bfd_vma) -1)
8072 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8073 insn2 = 0x7c631214; /* add 3,3,2 */
8074 bfd_put_32 (input_bfd, insn2, contents + offset);
8076 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8077 + R_PPC_GOT_TPREL16);
8078 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8083 insn1 &= 0x1f << 21;
8084 insn1 |= 0x3c020000; /* addis r,2,0 */
8087 /* Was an LD reloc. */
8089 r_symndx < symtab_hdr->sh_info;
8091 if (local_sections[r_symndx] == sec)
8093 if (r_symndx >= symtab_hdr->sh_info)
8094 r_symndx = STN_UNDEF;
8095 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8096 if (r_symndx != STN_UNDEF)
8097 rel->r_addend -= (local_syms[r_symndx].st_value
8098 + sec->output_offset
8099 + sec->output_section->vma);
8101 r_type = R_PPC_TPREL16_HA;
8102 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8103 if (offset != (bfd_vma) -1)
8105 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8106 rel[1].r_offset = offset + d_offset;
8107 rel[1].r_addend = rel->r_addend;
8108 insn2 = 0x38630000; /* addi 3,3,0 */
8109 bfd_put_32 (input_bfd, insn2, contents + offset);
8112 bfd_put_32 (input_bfd, insn1,
8113 contents + rel->r_offset - d_offset);
8116 /* We changed the symbol on an LD reloc. Start over
8117 in order to get h, sym, sec etc. right. */
8124 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8127 bfd_vma offset = rel->r_offset;
8129 if ((tls_mask & TLS_TPRELGD) != 0)
8132 r_type = R_PPC_NONE;
8133 insn2 = 0x7c631214; /* add 3,3,2 */
8138 r_type = R_PPC_TPREL16_LO;
8139 rel->r_offset += d_offset;
8140 insn2 = 0x38630000; /* addi 3,3,0 */
8142 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8143 bfd_put_32 (input_bfd, insn2, contents + offset);
8144 /* Zap the reloc on the _tls_get_addr call too. */
8145 BFD_ASSERT (offset == rel[1].r_offset);
8146 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8151 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8156 r_symndx < symtab_hdr->sh_info;
8158 if (local_sections[r_symndx] == sec)
8160 if (r_symndx >= symtab_hdr->sh_info)
8161 r_symndx = STN_UNDEF;
8162 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8163 if (r_symndx != STN_UNDEF)
8164 rel->r_addend -= (local_syms[r_symndx].st_value
8165 + sec->output_offset
8166 + sec->output_section->vma);
8168 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8169 rel->r_offset += d_offset;
8170 insn2 = 0x38630000; /* addi 3,3,0 */
8171 bfd_put_32 (input_bfd, insn2,
8172 contents + rel->r_offset - d_offset);
8173 /* Zap the reloc on the _tls_get_addr call too. */
8174 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
8175 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8181 /* Handle other relocations that tweak non-addend part of insn. */
8188 /* Branch taken prediction relocations. */
8189 case R_PPC_ADDR14_BRTAKEN:
8190 case R_PPC_REL14_BRTAKEN:
8191 branch_bit = BRANCH_PREDICT_BIT;
8194 /* Branch not taken prediction relocations. */
8195 case R_PPC_ADDR14_BRNTAKEN:
8196 case R_PPC_REL14_BRNTAKEN:
8200 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
8201 insn &= ~BRANCH_PREDICT_BIT;
8204 from = (rel->r_offset
8205 + input_section->output_offset
8206 + input_section->output_section->vma);
8208 /* Invert 'y' bit if not the default. */
8209 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8210 insn ^= BRANCH_PREDICT_BIT;
8212 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
8217 if (ELIMINATE_COPY_RELOCS
8221 && ppc_elf_hash_entry (h)->has_addr16_ha
8222 && ppc_elf_hash_entry (h)->has_addr16_lo
8223 && htab->params->pic_fixup > 0)
8225 /* Convert lis;addi or lis;load/store accessing a protected
8226 variable defined in a shared library to PIC. */
8229 if (r_type == R_PPC_ADDR16_HA)
8231 insn = bfd_get_32 (input_bfd,
8232 contents + rel->r_offset - d_offset);
8233 if ((insn & (0x3f << 26)) == (15u << 26)
8234 && (insn & (0x1f << 16)) == 0 /* lis */)
8240 p = (contents + input_section->size
8241 - relax_info->workaround_size
8242 - relax_info->picfixup_size
8244 off = (p - contents) - (rel->r_offset - d_offset);
8245 if (off > 0x1fffffc || (off & 3) != 0)
8246 info->callbacks->einfo
8247 (_("%H: fixup branch overflow\n"),
8248 input_bfd, input_section, rel->r_offset);
8250 bfd_put_32 (input_bfd, B | off,
8251 contents + rel->r_offset - d_offset);
8252 got_addr = (htab->elf.sgot->output_section->vma
8253 + htab->elf.sgot->output_offset
8254 + (h->got.offset & ~1));
8255 wrel->r_offset = (p - contents) + d_offset;
8256 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8257 wrel->r_addend = got_addr;
8259 insn |= ((unsigned int) (got_addr + 0x8000) >> 16) & 0xffff;
8260 bfd_put_32 (input_bfd, insn, p);
8262 /* Convert lis to lwz, loading address from GOT. */
8264 insn ^= (32u ^ 15u) << 26;
8265 insn |= (insn & (0x1f << 21)) >> 5;
8266 insn |= got_addr & 0xffff;
8267 bfd_put_32 (input_bfd, insn, p + 4);
8269 bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8270 picfixup_size += 12;
8272 /* Use one of the spare relocs, so --emit-relocs
8273 output is reasonable. */
8274 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8276 rel->r_offset = wrel[-1].r_offset + 4;
8277 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8278 rel->r_addend = wrel[-1].r_addend;
8280 /* Continue on as if we had a got reloc, to output
8282 r_type = R_PPC_GOT16_LO;
8286 /* xgettext:c-format */
8287 (_("%B(%A+%#Lx): error: %s with unexpected instruction %#x"),
8288 input_bfd, input_section, rel->r_offset,
8289 "R_PPC_ADDR16_HA", insn);
8291 else if (r_type == R_PPC_ADDR16_LO)
8293 insn = bfd_get_32 (input_bfd,
8294 contents + rel->r_offset - d_offset);
8295 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8296 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8297 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8298 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8299 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8300 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8301 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8302 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8303 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8304 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8305 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8306 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8307 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8308 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8309 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8311 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8312 && ((insn & 3) == 0 || (insn & 3) == 3)))
8314 /* Arrange to apply the reloc addend, if any. */
8316 unresolved_reloc = FALSE;
8317 rel->r_info = ELF32_R_INFO (0, r_type);
8321 /* xgettext:c-format */
8322 (_("%B(%A+%#Lx): error: %s with unexpected instruction %#x"),
8323 input_bfd, input_section, rel->r_offset,
8324 "R_PPC_ADDR16_LO", insn);
8329 if (!htab->is_vxworks)
8331 struct plt_entry *ent;
8335 if (h->type == STT_GNU_IFUNC)
8336 ifunc = &h->plt.plist;
8338 else if (local_got_offsets != NULL
8339 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8341 struct plt_entry **local_plt;
8343 local_plt = (struct plt_entry **) (local_got_offsets
8344 + symtab_hdr->sh_info);
8345 ifunc = local_plt + r_symndx;
8350 && (!bfd_link_pic (info)
8351 || is_branch_reloc (r_type)))
8354 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
8355 addend = rel->r_addend;
8356 ent = find_plt_ent (ifunc, got2, addend);
8360 if (bfd_link_pic (info)
8362 && htab->plt_type != PLT_NEW
8363 && (!htab->elf.dynamic_sections_created
8365 || h->dynindx == -1))
8367 /* Uh oh, we are going to create a pic glink stub
8368 for an ifunc (here for h == NULL and later in
8369 finish_dynamic_symbol for h != NULL), and
8370 apparently are using code compiled with
8371 -mbss-plt. The difficulty is that -mbss-plt code
8372 gives no indication via a magic PLTREL24 addend
8373 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8374 is pointing into a .got2 section (and how far
8376 info->callbacks->einfo
8377 /* xgettext:c-format */
8378 (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
8379 input_bfd, input_section, rel->r_offset, sym_name);
8381 if (h == NULL && (ent->plt.offset & 1) == 0)
8383 Elf_Internal_Rela rela;
8386 rela.r_offset = (htab->elf.iplt->output_section->vma
8387 + htab->elf.iplt->output_offset
8389 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8390 rela.r_addend = relocation;
8391 loc = htab->elf.irelplt->contents;
8392 loc += (htab->elf.irelplt->reloc_count++
8393 * sizeof (Elf32_External_Rela));
8394 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8395 htab->local_ifunc_resolver = 1;
8397 ent->plt.offset |= 1;
8399 if (h == NULL && (ent->glink_offset & 1) == 0)
8401 unsigned char *p = ((unsigned char *) htab->glink->contents
8402 + ent->glink_offset);
8403 write_glink_stub (ent, htab->elf.iplt, p, info);
8404 ent->glink_offset |= 1;
8407 unresolved_reloc = FALSE;
8408 if (htab->plt_type == PLT_NEW
8409 || !htab->elf.dynamic_sections_created
8411 || h->dynindx == -1)
8412 relocation = (htab->glink->output_section->vma
8413 + htab->glink->output_offset
8414 + (ent->glink_offset & ~1));
8416 relocation = (htab->elf.splt->output_section->vma
8417 + htab->elf.splt->output_offset
8422 addend = rel->r_addend;
8425 if (r_type < R_PPC_max)
8426 howto = ppc_elf_howto_table[r_type];
8430 info->callbacks->einfo
8431 /* xgettext:c-format */
8432 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8433 input_bfd, (int) r_type, sym_name);
8435 bfd_set_error (bfd_error_bad_value);
8443 case R_PPC_EMB_MRKREF:
8444 case R_PPC_GNU_VTINHERIT:
8445 case R_PPC_GNU_VTENTRY:
8448 /* GOT16 relocations. Like an ADDR16 using the symbol's
8449 address in the GOT as relocation value instead of the
8450 symbol's value itself. Also, create a GOT entry for the
8451 symbol and put the symbol value there. */
8452 case R_PPC_GOT_TLSGD16:
8453 case R_PPC_GOT_TLSGD16_LO:
8454 case R_PPC_GOT_TLSGD16_HI:
8455 case R_PPC_GOT_TLSGD16_HA:
8456 tls_type = TLS_TLS | TLS_GD;
8459 case R_PPC_GOT_TLSLD16:
8460 case R_PPC_GOT_TLSLD16_LO:
8461 case R_PPC_GOT_TLSLD16_HI:
8462 case R_PPC_GOT_TLSLD16_HA:
8463 tls_type = TLS_TLS | TLS_LD;
8466 case R_PPC_GOT_TPREL16:
8467 case R_PPC_GOT_TPREL16_LO:
8468 case R_PPC_GOT_TPREL16_HI:
8469 case R_PPC_GOT_TPREL16_HA:
8470 tls_type = TLS_TLS | TLS_TPREL;
8473 case R_PPC_GOT_DTPREL16:
8474 case R_PPC_GOT_DTPREL16_LO:
8475 case R_PPC_GOT_DTPREL16_HI:
8476 case R_PPC_GOT_DTPREL16_HA:
8477 tls_type = TLS_TLS | TLS_DTPREL;
8481 case R_PPC_GOT16_LO:
8482 case R_PPC_GOT16_HI:
8483 case R_PPC_GOT16_HA:
8487 /* Relocation is to the entry for this symbol in the global
8493 if (htab->elf.sgot == NULL)
8497 if (tls_type == (TLS_TLS | TLS_LD)
8499 || !h->def_dynamic))
8500 offp = &htab->tlsld_got.offset;
8503 if (!htab->elf.dynamic_sections_created
8505 || SYMBOL_REFERENCES_LOCAL (info, h)
8506 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
8507 /* This is actually a static link, or it is a
8508 -Bsymbolic link and the symbol is defined
8509 locally, or the symbol was forced to be local
8510 because of a version file. */
8515 unresolved_reloc = FALSE;
8517 offp = &h->got.offset;
8521 if (local_got_offsets == NULL)
8523 offp = &local_got_offsets[r_symndx];
8526 /* The offset must always be a multiple of 4. We use the
8527 least significant bit to record whether we have already
8528 processed this entry. */
8534 unsigned int tls_m = (tls_mask
8535 & (TLS_LD | TLS_GD | TLS_DTPREL
8536 | TLS_TPREL | TLS_TPRELGD));
8538 if (offp == &htab->tlsld_got.offset)
8544 /* We might have multiple got entries for this sym.
8545 Initialize them all. */
8550 if ((tls_m & TLS_LD) != 0)
8552 tls_ty = TLS_TLS | TLS_LD;
8555 else if ((tls_m & TLS_GD) != 0)
8557 tls_ty = TLS_TLS | TLS_GD;
8560 else if ((tls_m & TLS_DTPREL) != 0)
8562 tls_ty = TLS_TLS | TLS_DTPREL;
8563 tls_m &= ~TLS_DTPREL;
8565 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8567 tls_ty = TLS_TLS | TLS_TPREL;
8571 /* Generate relocs for the dynamic linker. */
8573 || (bfd_link_pic (info)
8575 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)
8576 || offp == &htab->tlsld_got.offset)))
8578 asection *rsec = htab->elf.srelgot;
8583 rsec = htab->elf.irelplt;
8585 htab->local_ifunc_resolver = 1;
8586 else if (is_static_defined (h))
8587 htab->maybe_local_ifunc_resolver = 1;
8589 outrel.r_offset = (htab->elf.sgot->output_section->vma
8590 + htab->elf.sgot->output_offset
8592 outrel.r_addend = 0;
8593 if (tls_ty & (TLS_LD | TLS_GD))
8595 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8596 if (tls_ty == (TLS_TLS | TLS_GD))
8598 loc = rsec->contents;
8599 loc += (rsec->reloc_count++
8600 * sizeof (Elf32_External_Rela));
8601 bfd_elf32_swap_reloca_out (output_bfd,
8603 outrel.r_offset += 4;
8605 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8608 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8609 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8610 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8611 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8613 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8614 else if (ifunc != NULL)
8615 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8617 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8618 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8620 outrel.r_addend += relocation;
8621 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8623 if (htab->elf.tls_sec == NULL)
8624 outrel.r_addend = 0;
8626 outrel.r_addend -= htab->elf.tls_sec->vma;
8629 loc = rsec->contents;
8630 loc += (rsec->reloc_count++
8631 * sizeof (Elf32_External_Rela));
8632 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8635 /* Init the .got section contents if we're not
8636 emitting a reloc. */
8639 bfd_vma value = relocation;
8643 if (htab->elf.tls_sec == NULL)
8647 if (tls_ty & TLS_LD)
8650 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8651 if (tls_ty & TLS_TPREL)
8652 value += DTP_OFFSET - TP_OFFSET;
8655 if (tls_ty & (TLS_LD | TLS_GD))
8657 bfd_put_32 (input_bfd, value,
8658 htab->elf.sgot->contents + off + 4);
8662 bfd_put_32 (input_bfd, value,
8663 htab->elf.sgot->contents + off);
8667 if (tls_ty & (TLS_LD | TLS_GD))
8676 if (off >= (bfd_vma) -2)
8679 if ((tls_type & TLS_TLS) != 0)
8681 if (tls_type != (TLS_TLS | TLS_LD))
8683 if ((tls_mask & TLS_LD) != 0
8685 || !h->def_dynamic))
8687 if (tls_type != (TLS_TLS | TLS_GD))
8689 if ((tls_mask & TLS_GD) != 0)
8691 if (tls_type != (TLS_TLS | TLS_DTPREL))
8693 if ((tls_mask & TLS_DTPREL) != 0)
8700 /* If here for a picfixup, we're done. */
8701 if (r_type != ELF32_R_TYPE (rel->r_info))
8704 relocation = (htab->elf.sgot->output_section->vma
8705 + htab->elf.sgot->output_offset
8707 - SYM_VAL (htab->elf.hgot));
8709 /* Addends on got relocations don't make much sense.
8710 x+off@got is actually x@got+off, and since the got is
8711 generated by a hash table traversal, the value in the
8712 got at entry m+n bears little relation to the entry m. */
8714 info->callbacks->einfo
8715 /* xgettext:c-format */
8716 (_("%H: non-zero addend on %s reloc against `%s'\n"),
8717 input_bfd, input_section, rel->r_offset,
8723 /* Relocations that need no special processing. */
8724 case R_PPC_LOCAL24PC:
8725 /* It makes no sense to point a local relocation
8726 at a symbol not in this object. */
8727 if (unresolved_reloc)
8729 (*info->callbacks->undefined_symbol) (info,
8730 h->root.root.string,
8737 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8739 /* @local on an ifunc does not really make sense since
8740 the ifunc resolver can take you anywhere. More
8741 seriously, calls to ifuncs must go through a plt call
8742 stub, and for pic the plt call stubs uses r30 to
8743 access the PLT. The problem is that a call that is
8744 local won't have the +32k reloc addend trick marking
8745 -fPIC code, so the linker won't know whether r30 is
8746 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8747 /* xgettext:c-format */
8748 info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"),
8749 input_bfd, input_section, rel->r_offset,
8750 h->root.root.string);
8754 case R_PPC_DTPREL16:
8755 case R_PPC_DTPREL16_LO:
8756 case R_PPC_DTPREL16_HI:
8757 case R_PPC_DTPREL16_HA:
8758 if (htab->elf.tls_sec != NULL)
8759 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8762 /* Relocations that may need to be propagated if this is a shared
8765 case R_PPC_TPREL16_LO:
8766 case R_PPC_TPREL16_HI:
8767 case R_PPC_TPREL16_HA:
8769 && h->root.type == bfd_link_hash_undefweak
8770 && h->dynindx == -1)
8772 /* Make this relocation against an undefined weak symbol
8773 resolve to zero. This is really just a tweak, since
8774 code using weak externs ought to check that they are
8775 defined before using them. */
8776 bfd_byte *p = contents + rel->r_offset - d_offset;
8777 unsigned int insn = bfd_get_32 (input_bfd, p);
8778 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8780 bfd_put_32 (input_bfd, insn, p);
8783 if (htab->elf.tls_sec != NULL)
8784 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8785 /* The TPREL16 relocs shouldn't really be used in shared
8786 libs as they will result in DT_TEXTREL being set, but
8787 support them anyway. */
8791 if (htab->elf.tls_sec != NULL)
8792 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8795 case R_PPC_DTPREL32:
8796 if (htab->elf.tls_sec != NULL)
8797 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8800 case R_PPC_DTPMOD32:
8806 case R_PPC_REL16_LO:
8807 case R_PPC_REL16_HI:
8808 case R_PPC_REL16_HA:
8809 case R_PPC_REL16DX_HA:
8813 if (h == NULL || h == htab->elf.hgot)
8819 case R_PPC_ADDR16_LO:
8820 case R_PPC_ADDR16_HI:
8821 case R_PPC_ADDR16_HA:
8826 case R_PPC_VLE_REL8:
8827 case R_PPC_VLE_REL15:
8828 case R_PPC_VLE_REL24:
8831 case R_PPC_REL14_BRTAKEN:
8832 case R_PPC_REL14_BRNTAKEN:
8833 /* If these relocations are not to a named symbol, they can be
8834 handled right here, no need to bother the dynamic linker. */
8835 if (SYMBOL_CALLS_LOCAL (info, h)
8836 || h == htab->elf.hgot)
8842 case R_PPC_ADDR14_BRTAKEN:
8843 case R_PPC_ADDR14_BRNTAKEN:
8844 if (h != NULL && !bfd_link_pic (info))
8849 if ((input_section->flags & SEC_ALLOC) == 0
8853 if ((bfd_link_pic (info)
8855 && ((h->root.type == bfd_link_hash_undefined
8856 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8857 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
8858 && (must_be_dyn_reloc (info, r_type)
8859 || !SYMBOL_CALLS_LOCAL (info, h)))
8860 || (ELIMINATE_COPY_RELOCS
8861 && !bfd_link_pic (info)
8866 && !(h->protected_def
8867 && ppc_elf_hash_entry (h)->has_addr16_ha
8868 && ppc_elf_hash_entry (h)->has_addr16_lo
8869 && htab->params->pic_fixup > 0)))
8877 fprintf (stderr, "ppc_elf_relocate_section needs to "
8878 "create relocation for %s\n",
8879 (h && h->root.root.string
8880 ? h->root.root.string : "<unknown>"));
8883 /* When generating a shared object, these relocations
8884 are copied into the output file to be resolved at run
8887 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8890 if (outrel.r_offset == (bfd_vma) -1
8891 || outrel.r_offset == (bfd_vma) -2)
8892 skip = (int) outrel.r_offset;
8893 outrel.r_offset += (input_section->output_section->vma
8894 + input_section->output_offset);
8897 memset (&outrel, 0, sizeof outrel);
8898 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
8901 BFD_ASSERT (indx != -1);
8902 unresolved_reloc = FALSE;
8903 outrel.r_info = ELF32_R_INFO (indx, r_type);
8904 outrel.r_addend = rel->r_addend;
8908 outrel.r_addend = relocation + rel->r_addend;
8910 if (r_type != R_PPC_ADDR32)
8914 /* If we get here when building a static
8915 executable, then the libc startup function
8916 responsible for applying indirect function
8917 relocations is going to complain about
8919 If we get here when building a dynamic
8920 executable, it will be because we have
8921 a text relocation. The dynamic loader
8922 will set the text segment writable and
8923 non-executable to apply text relocations.
8924 So we'll segfault when trying to run the
8925 indirection function to resolve the reloc. */
8926 info->callbacks->einfo
8927 /* xgettext:c-format */
8928 (_("%H: relocation %s for indirect "
8929 "function %s unsupported\n"),
8930 input_bfd, input_section, rel->r_offset,
8935 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8937 else if (sec == NULL || sec->owner == NULL)
8939 bfd_set_error (bfd_error_bad_value);
8946 /* We are turning this relocation into one
8947 against a section symbol. It would be
8948 proper to subtract the symbol's value,
8949 osec->vma, from the emitted reloc addend,
8950 but ld.so expects buggy relocs.
8951 FIXME: Why not always use a zero index? */
8952 osec = sec->output_section;
8953 indx = elf_section_data (osec)->dynindx;
8956 osec = htab->elf.text_index_section;
8957 indx = elf_section_data (osec)->dynindx;
8959 BFD_ASSERT (indx != 0);
8962 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8963 indx, osec->name, osec->flags,
8964 h->root.root.string);
8968 outrel.r_info = ELF32_R_INFO (indx, r_type);
8970 else if (ifunc != NULL)
8971 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8973 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8976 sreloc = elf_section_data (input_section)->sreloc;
8979 sreloc = htab->elf.irelplt;
8981 htab->local_ifunc_resolver = 1;
8982 else if (is_static_defined (h))
8983 htab->maybe_local_ifunc_resolver = 1;
8988 loc = sreloc->contents;
8989 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8990 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8995 /* This reloc will be computed at runtime. Clear the memory
8996 so that it contains a predictable value for prelink. */
8999 relocation = howto->pc_relative ? outrel.r_offset : 0;
9006 case R_PPC_RELAX_PLT:
9007 case R_PPC_RELAX_PLTREL24:
9010 struct plt_entry *ent;
9011 bfd_vma got2_addend = 0;
9013 if (r_type == R_PPC_RELAX_PLTREL24)
9015 if (bfd_link_pic (info))
9016 got2_addend = addend;
9019 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
9020 if (htab->plt_type == PLT_NEW)
9021 relocation = (htab->glink->output_section->vma
9022 + htab->glink->output_offset
9023 + ent->glink_offset);
9025 relocation = (htab->elf.splt->output_section->vma
9026 + htab->elf.splt->output_offset
9035 size_t insn_offset = rel->r_offset;
9038 if (bfd_link_pic (info))
9040 relocation -= (input_section->output_section->vma
9041 + input_section->output_offset
9042 + rel->r_offset - 4);
9043 stub = shared_stub_entry;
9044 bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12);
9045 bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8);
9046 bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4);
9048 size = ARRAY_SIZE (shared_stub_entry) - 3;
9053 size = ARRAY_SIZE (stub_entry);
9056 relocation += addend;
9057 if (bfd_link_relocatable (info))
9060 /* First insn is HA, second is LO. */
9062 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
9063 bfd_put_32 (input_bfd, insn, contents + insn_offset);
9067 insn |= relocation & 0xffff;
9068 bfd_put_32 (input_bfd, insn, contents + insn_offset);
9076 bfd_put_32 (input_bfd, insn, contents + insn_offset);
9080 /* Rewrite the reloc and convert one of the trailing nop
9081 relocs to describe this relocation. */
9082 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
9083 /* The relocs are at the bottom 2 bytes */
9084 wrel->r_offset = rel->r_offset + d_offset;
9085 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
9086 wrel->r_addend = rel->r_addend;
9087 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
9089 wrel->r_offset += 4;
9090 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
9094 /* Indirect .sdata relocation. */
9095 case R_PPC_EMB_SDAI16:
9096 BFD_ASSERT (htab->sdata[0].section != NULL);
9097 if (!is_static_defined (htab->sdata[0].sym))
9099 unresolved_reloc = TRUE;
9103 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9104 h, relocation, rel);
9108 /* Indirect .sdata2 relocation. */
9109 case R_PPC_EMB_SDA2I16:
9110 BFD_ASSERT (htab->sdata[1].section != NULL);
9111 if (!is_static_defined (htab->sdata[1].sym))
9113 unresolved_reloc = TRUE;
9117 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9118 h, relocation, rel);
9122 /* Handle the TOC16 reloc. We want to use the offset within the .got
9123 section, not the actual VMA. This is appropriate when generating
9124 an embedded ELF object, for which the .got section acts like the
9125 AIX .toc section. */
9126 case R_PPC_TOC16: /* phony GOT16 relocations */
9127 if (sec == NULL || sec->output_section == NULL)
9129 unresolved_reloc = TRUE;
9132 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9134 || strcmp (bfd_get_section_name (sec->owner, sec),
9137 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
9140 case R_PPC_PLTREL24:
9141 if (h != NULL && ifunc == NULL)
9143 struct plt_entry *ent;
9145 ent = find_plt_ent (&h->plt.plist, got2,
9146 bfd_link_pic (info) ? addend : 0);
9148 || htab->elf.splt == NULL)
9150 /* We didn't make a PLT entry for this symbol. This
9151 happens when statically linking PIC code, or when
9152 using -Bsymbolic. */
9156 /* Relocation is to the entry for this symbol in the
9157 procedure linkage table. */
9158 unresolved_reloc = FALSE;
9159 if (htab->plt_type == PLT_NEW)
9160 relocation = (htab->glink->output_section->vma
9161 + htab->glink->output_offset
9162 + ent->glink_offset);
9164 relocation = (htab->elf.splt->output_section->vma
9165 + htab->elf.splt->output_offset
9170 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9171 addend specifies the GOT pointer offset within .got2.
9172 Don't apply it to the relocation field. */
9176 /* Relocate against _SDA_BASE_. */
9177 case R_PPC_SDAREL16:
9180 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
9183 || sec->output_section == NULL
9184 || !is_static_defined (sda))
9186 unresolved_reloc = TRUE;
9189 addend -= SYM_VAL (sda);
9191 name = bfd_get_section_name (output_bfd, sec->output_section);
9192 if (!(strcmp (name, ".sdata") == 0
9193 || strcmp (name, ".sbss") == 0))
9195 info->callbacks->einfo
9196 /* xgettext:c-format */
9197 (_("%P: %B: the target (%s) of a %s relocation is "
9198 "in the wrong output section (%s)\n"),
9207 /* Relocate against _SDA2_BASE_. */
9208 case R_PPC_EMB_SDA2REL:
9211 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9214 || sec->output_section == NULL
9215 || !is_static_defined (sda))
9217 unresolved_reloc = TRUE;
9220 addend -= SYM_VAL (sda);
9222 name = bfd_get_section_name (output_bfd, sec->output_section);
9223 if (!(strcmp (name, ".sdata2") == 0
9224 || strcmp (name, ".sbss2") == 0))
9226 info->callbacks->einfo
9227 /* xgettext:c-format */
9228 (_("%P: %B: the target (%s) of a %s relocation is "
9229 "in the wrong output section (%s)\n"),
9238 case R_PPC_VLE_LO16A:
9239 relocation = relocation + addend;
9240 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9241 contents + rel->r_offset, relocation,
9242 split16a_type, htab->params->vle_reloc_fixup);
9245 case R_PPC_VLE_LO16D:
9246 relocation = relocation + addend;
9247 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9248 contents + rel->r_offset, relocation,
9249 split16d_type, htab->params->vle_reloc_fixup);
9252 case R_PPC_VLE_HI16A:
9253 relocation = (relocation + addend) >> 16;
9254 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9255 contents + rel->r_offset, relocation,
9256 split16a_type, htab->params->vle_reloc_fixup);
9259 case R_PPC_VLE_HI16D:
9260 relocation = (relocation + addend) >> 16;
9261 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9262 contents + rel->r_offset, relocation,
9263 split16d_type, htab->params->vle_reloc_fixup);
9266 case R_PPC_VLE_HA16A:
9267 relocation = (relocation + addend + 0x8000) >> 16;
9268 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9269 contents + rel->r_offset, relocation,
9270 split16a_type, htab->params->vle_reloc_fixup);
9273 case R_PPC_VLE_HA16D:
9274 relocation = (relocation + addend + 0x8000) >> 16;
9275 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9276 contents + rel->r_offset, relocation,
9277 split16d_type, htab->params->vle_reloc_fixup);
9280 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9281 case R_PPC_EMB_SDA21:
9282 case R_PPC_VLE_SDA21:
9283 case R_PPC_EMB_RELSDA:
9284 case R_PPC_VLE_SDA21_LO:
9289 struct elf_link_hash_entry *sda = NULL;
9291 if (sec == NULL || sec->output_section == NULL)
9293 unresolved_reloc = TRUE;
9297 name = bfd_get_section_name (output_bfd, sec->output_section);
9298 if (strcmp (name, ".sdata") == 0
9299 || strcmp (name, ".sbss") == 0)
9302 sda = htab->sdata[0].sym;
9304 else if (strcmp (name, ".sdata2") == 0
9305 || strcmp (name, ".sbss2") == 0)
9308 sda = htab->sdata[1].sym;
9310 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9311 || strcmp (name, ".PPC.EMB.sbss0") == 0)
9317 info->callbacks->einfo
9318 /* xgettext:c-format */
9319 (_("%P: %B: the target (%s) of a %s relocation is "
9320 "in the wrong output section (%s)\n"),
9326 bfd_set_error (bfd_error_bad_value);
9333 if (!is_static_defined (sda))
9335 unresolved_reloc = TRUE;
9338 addend -= SYM_VAL (sda);
9341 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9343 && (r_type == R_PPC_VLE_SDA21
9344 || r_type == R_PPC_VLE_SDA21_LO))
9346 relocation = relocation + addend;
9349 /* Force e_li insn, keeping RT from original insn. */
9353 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9354 /* Top 4 bits of value to 17..20. */
9355 insn |= (relocation & 0xf0000) >> 5;
9356 /* Next 5 bits of the value to 11..15. */
9357 insn |= (relocation & 0xf800) << 5;
9358 /* And the final 11 bits of the value to bits 21 to 31. */
9359 insn |= relocation & 0x7ff;
9361 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9363 if (r_type == R_PPC_VLE_SDA21
9364 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9368 else if (r_type == R_PPC_EMB_SDA21
9369 || r_type == R_PPC_VLE_SDA21
9370 || r_type == R_PPC_VLE_SDA21_LO)
9372 /* Fill in register field. */
9373 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9375 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9379 case R_PPC_VLE_SDAREL_LO16A:
9380 case R_PPC_VLE_SDAREL_LO16D:
9381 case R_PPC_VLE_SDAREL_HI16A:
9382 case R_PPC_VLE_SDAREL_HI16D:
9383 case R_PPC_VLE_SDAREL_HA16A:
9384 case R_PPC_VLE_SDAREL_HA16D:
9388 struct elf_link_hash_entry *sda = NULL;
9390 if (sec == NULL || sec->output_section == NULL)
9392 unresolved_reloc = TRUE;
9396 name = bfd_get_section_name (output_bfd, sec->output_section);
9397 if (strcmp (name, ".sdata") == 0
9398 || strcmp (name, ".sbss") == 0)
9399 sda = htab->sdata[0].sym;
9400 else if (strcmp (name, ".sdata2") == 0
9401 || strcmp (name, ".sbss2") == 0)
9402 sda = htab->sdata[1].sym;
9406 /* xgettext:c-format */
9407 (_("%B: the target (%s) of a %s relocation is "
9408 "in the wrong output section (%s)"),
9414 bfd_set_error (bfd_error_bad_value);
9419 if (sda == NULL || !is_static_defined (sda))
9421 unresolved_reloc = TRUE;
9424 value = relocation + addend - SYM_VAL (sda);
9426 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9427 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9428 contents + rel->r_offset, value,
9430 htab->params->vle_reloc_fixup);
9431 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9432 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9433 contents + rel->r_offset, value,
9435 htab->params->vle_reloc_fixup);
9436 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9438 value = value >> 16;
9439 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9440 contents + rel->r_offset, value,
9442 htab->params->vle_reloc_fixup);
9444 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9446 value = value >> 16;
9447 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9448 contents + rel->r_offset, value,
9450 htab->params->vle_reloc_fixup);
9452 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9454 value = (value + 0x8000) >> 16;
9455 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9456 contents + rel->r_offset, value,
9458 htab->params->vle_reloc_fixup);
9460 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9462 value = (value + 0x8000) >> 16;
9463 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9464 contents + rel->r_offset, value,
9466 htab->params->vle_reloc_fixup);
9471 /* Relocate against the beginning of the section. */
9473 case R_PPC_SECTOFF_LO:
9474 case R_PPC_SECTOFF_HI:
9475 case R_PPC_SECTOFF_HA:
9476 if (sec == NULL || sec->output_section == NULL)
9478 unresolved_reloc = TRUE;
9481 addend -= sec->output_section->vma;
9484 /* Negative relocations. */
9485 case R_PPC_EMB_NADDR32:
9486 case R_PPC_EMB_NADDR16:
9487 case R_PPC_EMB_NADDR16_LO:
9488 case R_PPC_EMB_NADDR16_HI:
9489 case R_PPC_EMB_NADDR16_HA:
9490 addend -= 2 * relocation;
9494 case R_PPC_GLOB_DAT:
9495 case R_PPC_JMP_SLOT:
9496 case R_PPC_RELATIVE:
9497 case R_PPC_IRELATIVE:
9499 case R_PPC_PLTREL32:
9500 case R_PPC_PLT16_LO:
9501 case R_PPC_PLT16_HI:
9502 case R_PPC_PLT16_HA:
9504 case R_PPC_EMB_RELSEC16:
9505 case R_PPC_EMB_RELST_LO:
9506 case R_PPC_EMB_RELST_HI:
9507 case R_PPC_EMB_RELST_HA:
9508 case R_PPC_EMB_BIT_FLD:
9509 info->callbacks->einfo
9510 /* xgettext:c-format */
9511 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9516 bfd_set_error (bfd_error_invalid_operation);
9521 /* Do any further special processing. */
9527 case R_PPC_ADDR16_HA:
9528 case R_PPC_REL16_HA:
9529 case R_PPC_REL16DX_HA:
9530 case R_PPC_SECTOFF_HA:
9531 case R_PPC_TPREL16_HA:
9532 case R_PPC_DTPREL16_HA:
9533 case R_PPC_EMB_NADDR16_HA:
9534 case R_PPC_EMB_RELST_HA:
9535 /* It's just possible that this symbol is a weak symbol
9536 that's not actually defined anywhere. In that case,
9537 'sec' would be NULL, and we should leave the symbol
9538 alone (it will be set to zero elsewhere in the link). */
9543 case R_PPC_PLT16_HA:
9544 case R_PPC_GOT16_HA:
9545 case R_PPC_GOT_TLSGD16_HA:
9546 case R_PPC_GOT_TLSLD16_HA:
9547 case R_PPC_GOT_TPREL16_HA:
9548 case R_PPC_GOT_DTPREL16_HA:
9549 /* Add 0x10000 if sign bit in 0:15 is set.
9550 Bits 0:15 are not used. */
9555 case R_PPC_ADDR16_LO:
9557 case R_PPC_GOT16_LO:
9558 case R_PPC_SDAREL16:
9560 case R_PPC_SECTOFF_LO:
9561 case R_PPC_DTPREL16:
9562 case R_PPC_DTPREL16_LO:
9564 case R_PPC_TPREL16_LO:
9565 case R_PPC_GOT_TLSGD16:
9566 case R_PPC_GOT_TLSGD16_LO:
9567 case R_PPC_GOT_TLSLD16:
9568 case R_PPC_GOT_TLSLD16_LO:
9569 case R_PPC_GOT_DTPREL16:
9570 case R_PPC_GOT_DTPREL16_LO:
9571 case R_PPC_GOT_TPREL16:
9572 case R_PPC_GOT_TPREL16_LO:
9574 /* The 32-bit ABI lacks proper relocations to deal with
9575 certain 64-bit instructions. Prevent damage to bits
9576 that make up part of the insn opcode. */
9577 unsigned int insn, mask, lobit;
9579 insn = bfd_get_32 (input_bfd,
9580 contents + rel->r_offset - d_offset);
9582 if (is_insn_ds_form (insn))
9584 else if (is_insn_dq_form (insn))
9588 relocation += addend;
9589 addend = insn & mask;
9590 lobit = mask & relocation;
9593 relocation ^= lobit;
9594 info->callbacks->einfo
9595 /* xgettext:c-format */
9596 (_("%H: error: %s against `%s' not a multiple of %u\n"),
9597 input_bfd, input_section, rel->r_offset,
9598 howto->name, sym_name, mask + 1);
9599 bfd_set_error (bfd_error_bad_value);
9607 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9608 "offset = %ld, addend = %ld\n",
9613 (long) rel->r_offset,
9617 if (unresolved_reloc
9618 && !((input_section->flags & SEC_DEBUGGING) != 0
9620 && _bfd_elf_section_offset (output_bfd, info, input_section,
9621 rel->r_offset) != (bfd_vma) -1)
9623 info->callbacks->einfo
9624 /* xgettext:c-format */
9625 (_("%H: unresolvable %s relocation against symbol `%s'\n"),
9626 input_bfd, input_section, rel->r_offset,
9632 /* 16-bit fields in insns mostly have signed values, but a
9633 few insns have 16-bit unsigned values. Really, we should
9634 have different reloc types. */
9635 if (howto->complain_on_overflow != complain_overflow_dont
9636 && howto->dst_mask == 0xffff
9637 && (input_section->flags & SEC_CODE) != 0)
9639 enum complain_overflow complain = complain_overflow_signed;
9641 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9645 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9646 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9647 complain = complain_overflow_bitfield;
9648 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9649 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9650 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9651 complain = complain_overflow_unsigned;
9653 if (howto->complain_on_overflow != complain)
9656 alt_howto.complain_on_overflow = complain;
9661 if (r_type == R_PPC_REL16DX_HA)
9663 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9664 if (rel->r_offset + 4 > input_section->size)
9665 r = bfd_reloc_outofrange;
9670 relocation += addend;
9671 relocation -= (rel->r_offset
9672 + input_section->output_offset
9673 + input_section->output_section->vma);
9675 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9677 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9678 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9683 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9684 rel->r_offset, relocation, addend);
9686 if (r != bfd_reloc_ok)
9688 if (r == bfd_reloc_overflow)
9691 /* On code like "if (foo) foo();" don't report overflow
9692 on a branch to zero when foo is undefined. */
9695 && (h->root.type == bfd_link_hash_undefweak
9696 || h->root.type == bfd_link_hash_undefined)
9697 && is_branch_reloc (r_type)))
9698 info->callbacks->reloc_overflow
9699 (info, (h ? &h->root : NULL), sym_name, howto->name,
9700 rel->r_addend, input_bfd, input_section, rel->r_offset);
9704 info->callbacks->einfo
9705 /* xgettext:c-format */
9706 (_("%H: %s reloc against `%s': error %d\n"),
9707 input_bfd, input_section, rel->r_offset,
9708 howto->name, sym_name, (int) r);
9719 Elf_Internal_Shdr *rel_hdr;
9720 size_t deleted = rel - wrel;
9722 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9723 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9724 if (rel_hdr->sh_size == 0)
9726 /* It is too late to remove an empty reloc section. Leave
9728 ??? What is wrong with an empty section??? */
9729 rel_hdr->sh_size = rel_hdr->sh_entsize;
9734 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9735 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9736 input_section->reloc_count -= deleted;
9740 fprintf (stderr, "\n");
9743 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9744 && input_section->size != input_section->rawsize
9745 && (strcmp (input_section->output_section->name, ".init") == 0
9746 || strcmp (input_section->output_section->name, ".fini") == 0))
9748 /* Branch around the trampolines. */
9749 unsigned int insn = B + input_section->size - input_section->rawsize;
9750 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9753 if (htab->params->ppc476_workaround
9754 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9755 && (!bfd_link_relocatable (info)
9756 || (input_section->output_section->alignment_power
9757 >= htab->params->pagesize_p2)))
9759 bfd_vma start_addr, end_addr, addr;
9760 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9762 if (relax_info->workaround_size != 0)
9768 bfd_put_32 (input_bfd, BA, fill);
9769 p = contents + input_section->size - relax_info->workaround_size;
9770 n = relax_info->workaround_size >> 2;
9773 memcpy (p, fill, 4);
9778 /* The idea is: Replace the last instruction on a page with a
9779 branch to a patch area. Put the insn there followed by a
9780 branch back to the next page. Complicated a little by
9781 needing to handle moved conditional branches, and by not
9782 wanting to touch data-in-text. */
9784 start_addr = (input_section->output_section->vma
9785 + input_section->output_offset);
9786 end_addr = (start_addr + input_section->size
9787 - relax_info->workaround_size);
9788 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9792 bfd_vma offset = addr - start_addr;
9793 Elf_Internal_Rela *lo, *hi;
9794 bfd_boolean is_data;
9795 bfd_vma patch_off, patch_addr;
9798 /* Do we have a data reloc at this offset? If so, leave
9806 rel = lo + (hi - lo) / 2;
9807 if (rel->r_offset < offset)
9809 else if (rel->r_offset > offset + 3)
9813 switch (ELF32_R_TYPE (rel->r_info))
9830 /* Some instructions can be left alone too. Unconditional
9831 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9832 avoid the icache failure.
9834 The problem occurs due to prefetch across a page boundary
9835 where stale instructions can be fetched from the next
9836 page, and the mechanism for flushing these bad
9837 instructions fails under certain circumstances. The
9838 unconditional branches:
9839 1) Branch: b, bl, ba, bla,
9840 2) Branch Conditional: bc, bca, bcl, bcla,
9841 3) Branch Conditional to Link Register: bclr, bclrl,
9842 where (2) and (3) have BO=0x14 making them unconditional,
9843 prevent the bad prefetch because the prefetch itself is
9844 affected by these instructions. This happens even if the
9845 instruction is not executed.
9850 . addi 9,9,new_page@l
9857 The bctr is not predicted taken due to ctr not being
9858 ready, so prefetch continues on past the bctr into the
9859 new page which might have stale instructions. If they
9860 fail to be flushed, then they will be executed after the
9861 bctr executes. Either of the following modifications
9862 prevent the bad prefetch from happening in the first
9865 . lis 9,new_page@ha lis 9,new_page@ha
9866 . addi 9,9,new_page@l addi 9,9,new_page@l
9869 . nop b somewhere_else
9870 . b somewhere_else nop
9871 . new_page: new_page:
9873 insn = bfd_get_32 (input_bfd, contents + offset);
9874 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9875 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9876 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9877 || ((insn & (0x3f << 26)) == (19u << 26)
9878 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9879 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9882 patch_addr = (start_addr + input_section->size
9883 - relax_info->workaround_size);
9884 patch_addr = (patch_addr + 15) & -16;
9885 patch_off = patch_addr - start_addr;
9886 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9889 && rel->r_offset >= offset
9890 && rel->r_offset < offset + 4)
9894 /* If the insn we are patching had a reloc, adjust the
9895 reloc r_offset so that the reloc applies to the moved
9896 location. This matters for -r and --emit-relocs. */
9897 if (rel + 1 != relend)
9899 Elf_Internal_Rela tmp = *rel;
9901 /* Keep the relocs sorted by r_offset. */
9902 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9905 relend[-1].r_offset += patch_off - offset;
9907 /* Adjust REL16 addends too. */
9908 switch (ELF32_R_TYPE (relend[-1].r_info))
9911 case R_PPC_REL16_LO:
9912 case R_PPC_REL16_HI:
9913 case R_PPC_REL16_HA:
9914 relend[-1].r_addend += patch_off - offset;
9920 /* If we are building a PIE or shared library with
9921 non-PIC objects, perhaps we had a dynamic reloc too?
9922 If so, the dynamic reloc must move with the insn. */
9923 sreloc = elf_section_data (input_section)->sreloc;
9926 Elf32_External_Rela *slo, *shi, *srelend;
9929 slo = (Elf32_External_Rela *) sreloc->contents;
9930 shi = srelend = slo + sreloc->reloc_count;
9931 soffset = (offset + input_section->output_section->vma
9932 + input_section->output_offset);
9935 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9936 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9938 if (outrel.r_offset < soffset)
9940 else if (outrel.r_offset > soffset + 3)
9944 if (srel + 1 != srelend)
9946 memmove (srel, srel + 1,
9947 (srelend - (srel + 1)) * sizeof (*srel));
9950 outrel.r_offset += patch_off - offset;
9951 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9961 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9962 && (insn & 2) == 0 /* relative */)
9964 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9966 delta += offset - patch_off;
9967 if (bfd_link_relocatable (info) && rel != NULL)
9969 if (!bfd_link_relocatable (info) && rel != NULL)
9971 enum elf_ppc_reloc_type r_type;
9973 r_type = ELF32_R_TYPE (relend[-1].r_info);
9974 if (r_type == R_PPC_REL14_BRTAKEN)
9975 insn |= BRANCH_PREDICT_BIT;
9976 else if (r_type == R_PPC_REL14_BRNTAKEN)
9977 insn &= ~BRANCH_PREDICT_BIT;
9979 BFD_ASSERT (r_type == R_PPC_REL14);
9981 if ((r_type == R_PPC_REL14_BRTAKEN
9982 || r_type == R_PPC_REL14_BRNTAKEN)
9983 && delta + 0x8000 < 0x10000
9984 && (bfd_signed_vma) delta < 0)
9985 insn ^= BRANCH_PREDICT_BIT;
9987 if (delta + 0x8000 < 0x10000)
9989 bfd_put_32 (input_bfd,
9990 (insn & ~0xfffc) | (delta & 0xfffc),
9991 contents + patch_off);
9993 bfd_put_32 (input_bfd,
9994 B | ((offset + 4 - patch_off) & 0x3fffffc),
9995 contents + patch_off);
10002 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
10004 relend[-1].r_offset += 8;
10005 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
10007 bfd_put_32 (input_bfd,
10008 (insn & ~0xfffc) | 8,
10009 contents + patch_off);
10011 bfd_put_32 (input_bfd,
10012 B | ((offset + 4 - patch_off) & 0x3fffffc),
10013 contents + patch_off);
10015 bfd_put_32 (input_bfd,
10016 B | ((delta - 8) & 0x3fffffc),
10017 contents + patch_off);
10023 bfd_put_32 (input_bfd, insn, contents + patch_off);
10025 bfd_put_32 (input_bfd,
10026 B | ((offset + 4 - patch_off) & 0x3fffffc),
10027 contents + patch_off);
10030 BFD_ASSERT (patch_off <= input_section->size);
10031 relax_info->workaround_size = input_section->size - patch_off;
10038 /* Finish up dynamic symbol handling. We set the contents of various
10039 dynamic sections here. */
10042 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
10043 struct bfd_link_info *info,
10044 struct elf_link_hash_entry *h,
10045 Elf_Internal_Sym *sym)
10047 struct ppc_elf_link_hash_table *htab;
10048 struct plt_entry *ent;
10049 bfd_boolean doneone;
10052 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
10053 h->root.root.string);
10056 htab = ppc_elf_hash_table (info);
10057 BFD_ASSERT (htab->elf.dynobj != NULL);
10060 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10061 if (ent->plt.offset != (bfd_vma) -1)
10065 Elf_Internal_Rela rela;
10067 bfd_vma reloc_index;
10069 if (htab->plt_type == PLT_NEW
10070 || !htab->elf.dynamic_sections_created
10071 || h->dynindx == -1)
10072 reloc_index = ent->plt.offset / 4;
10075 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
10076 / htab->plt_slot_size);
10077 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
10078 && htab->plt_type == PLT_OLD)
10079 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
10082 /* This symbol has an entry in the procedure linkage table.
10084 if (htab->plt_type == PLT_VXWORKS
10085 && htab->elf.dynamic_sections_created
10086 && h->dynindx != -1)
10088 bfd_vma got_offset;
10089 const bfd_vma *plt_entry;
10091 /* The first three entries in .got.plt are reserved. */
10092 got_offset = (reloc_index + 3) * 4;
10094 /* Use the right PLT. */
10095 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
10096 : ppc_elf_vxworks_plt_entry;
10098 /* Fill in the .plt on VxWorks. */
10099 if (bfd_link_pic (info))
10101 bfd_put_32 (output_bfd,
10102 plt_entry[0] | PPC_HA (got_offset),
10103 htab->elf.splt->contents + ent->plt.offset + 0);
10104 bfd_put_32 (output_bfd,
10105 plt_entry[1] | PPC_LO (got_offset),
10106 htab->elf.splt->contents + ent->plt.offset + 4);
10110 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
10112 bfd_put_32 (output_bfd,
10113 plt_entry[0] | PPC_HA (got_loc),
10114 htab->elf.splt->contents + ent->plt.offset + 0);
10115 bfd_put_32 (output_bfd,
10116 plt_entry[1] | PPC_LO (got_loc),
10117 htab->elf.splt->contents + ent->plt.offset + 4);
10120 bfd_put_32 (output_bfd, plt_entry[2],
10121 htab->elf.splt->contents + ent->plt.offset + 8);
10122 bfd_put_32 (output_bfd, plt_entry[3],
10123 htab->elf.splt->contents + ent->plt.offset + 12);
10125 /* This instruction is an immediate load. The value loaded is
10126 the byte offset of the R_PPC_JMP_SLOT relocation from the
10127 start of the .rela.plt section. The value is stored in the
10128 low-order 16 bits of the load instruction. */
10129 /* NOTE: It appears that this is now an index rather than a
10130 prescaled offset. */
10131 bfd_put_32 (output_bfd,
10132 plt_entry[4] | reloc_index,
10133 htab->elf.splt->contents + ent->plt.offset + 16);
10134 /* This instruction is a PC-relative branch whose target is
10135 the start of the PLT section. The address of this branch
10136 instruction is 20 bytes beyond the start of this PLT entry.
10137 The address is encoded in bits 6-29, inclusive. The value
10138 stored is right-shifted by two bits, permitting a 26-bit
10140 bfd_put_32 (output_bfd,
10142 | (-(ent->plt.offset + 20) & 0x03fffffc)),
10143 htab->elf.splt->contents + ent->plt.offset + 20);
10144 bfd_put_32 (output_bfd, plt_entry[6],
10145 htab->elf.splt->contents + ent->plt.offset + 24);
10146 bfd_put_32 (output_bfd, plt_entry[7],
10147 htab->elf.splt->contents + ent->plt.offset + 28);
10149 /* Fill in the GOT entry corresponding to this PLT slot with
10150 the address immediately after the "bctr" instruction
10151 in this PLT entry. */
10152 bfd_put_32 (output_bfd, (htab->elf.splt->output_section->vma
10153 + htab->elf.splt->output_offset
10154 + ent->plt.offset + 16),
10155 htab->elf.sgotplt->contents + got_offset);
10157 if (!bfd_link_pic (info))
10159 /* Fill in a couple of entries in .rela.plt.unloaded. */
10160 loc = htab->srelplt2->contents
10161 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10162 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10163 * sizeof (Elf32_External_Rela));
10165 /* Provide the @ha relocation for the first instruction. */
10166 rela.r_offset = (htab->elf.splt->output_section->vma
10167 + htab->elf.splt->output_offset
10168 + ent->plt.offset + 2);
10169 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10171 rela.r_addend = got_offset;
10172 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10173 loc += sizeof (Elf32_External_Rela);
10175 /* Provide the @l relocation for the second instruction. */
10176 rela.r_offset = (htab->elf.splt->output_section->vma
10177 + htab->elf.splt->output_offset
10178 + ent->plt.offset + 6);
10179 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10181 rela.r_addend = got_offset;
10182 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10183 loc += sizeof (Elf32_External_Rela);
10185 /* Provide a relocation for the GOT entry corresponding to this
10186 PLT slot. Point it at the middle of the .plt entry. */
10187 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10188 + htab->elf.sgotplt->output_offset
10190 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
10192 rela.r_addend = ent->plt.offset + 16;
10193 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10196 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10197 In particular, the offset for the relocation is not the
10198 address of the PLT entry for this function, as specified
10199 by the ABI. Instead, the offset is set to the address of
10200 the GOT slot for this function. See EABI 4.4.4.1. */
10201 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10202 + htab->elf.sgotplt->output_offset
10208 asection *splt = htab->elf.splt;
10209 if (!htab->elf.dynamic_sections_created
10210 || h->dynindx == -1)
10211 splt = htab->elf.iplt;
10213 rela.r_offset = (splt->output_section->vma
10214 + splt->output_offset
10215 + ent->plt.offset);
10216 if (htab->plt_type == PLT_OLD
10217 || !htab->elf.dynamic_sections_created
10218 || h->dynindx == -1)
10220 /* We don't need to fill in the .plt. The ppc dynamic
10221 linker will fill it in. */
10225 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10226 + htab->glink->output_section->vma
10227 + htab->glink->output_offset);
10228 bfd_put_32 (output_bfd, val,
10229 splt->contents + ent->plt.offset);
10233 /* Fill in the entry in the .rela.plt section. */
10235 if (!htab->elf.dynamic_sections_created
10236 || h->dynindx == -1)
10238 BFD_ASSERT (h->type == STT_GNU_IFUNC
10240 && (h->root.type == bfd_link_hash_defined
10241 || h->root.type == bfd_link_hash_defweak));
10242 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10243 rela.r_addend = SYM_VAL (h);
10246 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
10248 if (!htab->elf.dynamic_sections_created
10249 || h->dynindx == -1)
10251 loc = (htab->elf.irelplt->contents
10252 + (htab->elf.irelplt->reloc_count++
10253 * sizeof (Elf32_External_Rela)));
10254 htab->local_ifunc_resolver = 1;
10258 loc = (htab->elf.srelplt->contents
10259 + reloc_index * sizeof (Elf32_External_Rela));
10260 if (h->type == STT_GNU_IFUNC && is_static_defined (h))
10261 htab->maybe_local_ifunc_resolver = 1;
10263 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10265 if (!h->def_regular)
10267 /* Mark the symbol as undefined, rather than as
10268 defined in the .plt section. Leave the value if
10269 there were any relocations where pointer equality
10270 matters (this is a clue for the dynamic linker, to
10271 make function pointer comparisons work between an
10272 application and shared library), otherwise set it
10274 sym->st_shndx = SHN_UNDEF;
10275 if (!h->pointer_equality_needed)
10277 else if (!h->ref_regular_nonweak)
10279 /* This breaks function pointer comparisons, but
10280 that is better than breaking tests for a NULL
10281 function pointer. */
10285 else if (h->type == STT_GNU_IFUNC
10286 && !bfd_link_pic (info))
10288 /* Set the value of ifunc symbols in a non-pie
10289 executable to the glink entry. This is to avoid
10290 text relocations. We can't do this for ifunc in
10291 allocate_dynrelocs, as we do for normal dynamic
10292 function symbols with plt entries, because we need
10293 to keep the original value around for the ifunc
10295 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10296 (output_bfd, htab->glink->output_section));
10297 sym->st_value = (ent->glink_offset
10298 + htab->glink->output_offset
10299 + htab->glink->output_section->vma);
10304 if (htab->plt_type == PLT_NEW
10305 || !htab->elf.dynamic_sections_created
10306 || h->dynindx == -1)
10309 asection *splt = htab->elf.splt;
10310 if (!htab->elf.dynamic_sections_created
10311 || h->dynindx == -1)
10312 splt = htab->elf.iplt;
10314 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10316 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
10318 bfd_put_32 (output_bfd, LWZ_11_3, p);
10320 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
10322 bfd_put_32 (output_bfd, MR_0_3, p);
10324 bfd_put_32 (output_bfd, CMPWI_11_0, p);
10326 bfd_put_32 (output_bfd, ADD_3_12_2, p);
10328 bfd_put_32 (output_bfd, BEQLR, p);
10330 bfd_put_32 (output_bfd, MR_3_0, p);
10332 bfd_put_32 (output_bfd, NOP, p);
10336 write_glink_stub (ent, splt, p, info);
10338 if (!bfd_link_pic (info))
10339 /* We only need one non-PIC glink stub. */
10349 Elf_Internal_Rela rela;
10352 /* This symbols needs a copy reloc. Set it up. */
10355 fprintf (stderr, ", copy");
10358 BFD_ASSERT (h->dynindx != -1);
10360 if (ppc_elf_hash_entry (h)->has_sda_refs)
10362 else if (h->root.u.def.section == htab->elf.sdynrelro)
10363 s = htab->elf.sreldynrelro;
10365 s = htab->elf.srelbss;
10366 BFD_ASSERT (s != NULL);
10368 rela.r_offset = SYM_VAL (h);
10369 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10371 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10372 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10376 fprintf (stderr, "\n");
10382 static enum elf_reloc_type_class
10383 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10384 const asection *rel_sec,
10385 const Elf_Internal_Rela *rela)
10387 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10389 if (rel_sec == htab->elf.irelplt)
10390 return reloc_class_ifunc;
10392 switch (ELF32_R_TYPE (rela->r_info))
10394 case R_PPC_RELATIVE:
10395 return reloc_class_relative;
10396 case R_PPC_JMP_SLOT:
10397 return reloc_class_plt;
10399 return reloc_class_copy;
10401 return reloc_class_normal;
10405 /* Finish up the dynamic sections. */
10408 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10409 struct bfd_link_info *info)
10412 struct ppc_elf_link_hash_table *htab;
10415 bfd_boolean ret = TRUE;
10418 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10421 htab = ppc_elf_hash_table (info);
10422 dynobj = htab->elf.dynobj;
10423 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
10426 if (htab->elf.hgot != NULL)
10427 got = SYM_VAL (htab->elf.hgot);
10429 if (htab->elf.dynamic_sections_created)
10431 Elf32_External_Dyn *dyncon, *dynconend;
10433 BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL);
10435 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10436 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10437 for (; dyncon < dynconend; dyncon++)
10439 Elf_Internal_Dyn dyn;
10442 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10447 if (htab->is_vxworks)
10448 s = htab->elf.sgotplt;
10450 s = htab->elf.splt;
10451 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10455 dyn.d_un.d_val = htab->elf.srelplt->size;
10459 s = htab->elf.srelplt;
10460 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10464 dyn.d_un.d_ptr = got;
10468 if (htab->local_ifunc_resolver)
10469 info->callbacks->einfo
10470 (_("%X%P: text relocations and GNU indirect "
10471 "functions will result in a segfault at runtime\n"));
10472 else if (htab->maybe_local_ifunc_resolver)
10473 info->callbacks->einfo
10474 (_("%P: warning: text relocations and GNU indirect "
10475 "functions may result in a segfault at runtime\n"));
10479 if (htab->is_vxworks
10480 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10485 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10489 if (htab->elf.sgot != NULL
10490 && htab->elf.sgot->output_section != bfd_abs_section_ptr)
10492 if (htab->elf.hgot->root.u.def.section == htab->elf.sgot
10493 || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt)
10495 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
10497 p += htab->elf.hgot->root.u.def.value;
10498 if (htab->plt_type == PLT_OLD)
10500 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10501 so that a function can easily find the address of
10502 _GLOBAL_OFFSET_TABLE_. */
10503 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10504 < htab->elf.hgot->root.u.def.section->size);
10505 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10510 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10511 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10512 < htab->elf.hgot->root.u.def.section->size);
10513 bfd_put_32 (output_bfd, val, p);
10518 /* xgettext:c-format */
10519 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
10520 htab->elf.hgot->root.root.string,
10521 (htab->elf.sgotplt != NULL
10522 ? htab->elf.sgotplt->name
10523 : htab->elf.sgot->name));
10524 bfd_set_error (bfd_error_bad_value);
10528 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
10531 /* Fill in the first entry in the VxWorks procedure linkage table. */
10532 if (htab->is_vxworks
10533 && htab->elf.splt != NULL
10534 && htab->elf.splt->size != 0
10535 && htab->elf.splt->output_section != bfd_abs_section_ptr)
10537 asection *splt = htab->elf.splt;
10538 /* Use the right PLT. */
10539 const bfd_vma *plt_entry = (bfd_link_pic (info)
10540 ? ppc_elf_vxworks_pic_plt0_entry
10541 : ppc_elf_vxworks_plt0_entry);
10543 if (!bfd_link_pic (info))
10545 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10547 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10548 splt->contents + 0);
10549 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10550 splt->contents + 4);
10554 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10555 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10557 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10558 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10559 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10560 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10561 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10562 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10564 if (! bfd_link_pic (info))
10566 Elf_Internal_Rela rela;
10569 loc = htab->srelplt2->contents;
10571 /* Output the @ha relocation for the first instruction. */
10572 rela.r_offset = (htab->elf.splt->output_section->vma
10573 + htab->elf.splt->output_offset
10575 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10577 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10578 loc += sizeof (Elf32_External_Rela);
10580 /* Output the @l relocation for the second instruction. */
10581 rela.r_offset = (htab->elf.splt->output_section->vma
10582 + htab->elf.splt->output_offset
10584 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10586 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10587 loc += sizeof (Elf32_External_Rela);
10589 /* Fix up the remaining relocations. They may have the wrong
10590 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10591 in which symbols were output. */
10592 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10594 Elf_Internal_Rela rel;
10596 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10597 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10598 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10599 loc += sizeof (Elf32_External_Rela);
10601 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10602 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10603 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10604 loc += sizeof (Elf32_External_Rela);
10606 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10607 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10608 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10609 loc += sizeof (Elf32_External_Rela);
10614 if (htab->glink != NULL
10615 && htab->glink->contents != NULL
10616 && htab->elf.dynamic_sections_created)
10619 unsigned char *endp;
10624 * PIC glink code is the following:
10626 * # ith PLT code stub.
10627 * addis 11,30,(plt+(i-1)*4-got)@ha
10628 * lwz 11,(plt+(i-1)*4-got)@l(11)
10632 * # A table of branches, one for each plt entry.
10633 * # The idea is that the plt call stub loads ctr and r11 with these
10634 * # addresses, so (r11 - res_0) gives the plt index * 4.
10635 * res_0: b PLTresolve
10636 * res_1: b PLTresolve
10638 * # Some number of entries towards the end can be nops
10644 * addis 11,11,(1f-res_0)@ha
10647 * 1: addi 11,11,(1b-res_0)@l
10650 * sub 11,11,12 # r11 = index * 4
10651 * addis 12,12,(got+4-1b)@ha
10652 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10653 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10656 * add 11,0,11 # r11 = index * 12 = reloc offset.
10659 static const unsigned int pic_plt_resolve[] =
10680 * Non-PIC glink code is a little simpler.
10682 * # ith PLT code stub.
10683 * lis 11,(plt+(i-1)*4)@ha
10684 * lwz 11,(plt+(i-1)*4)@l(11)
10688 * The branch table is the same, then comes
10691 * lis 12,(got+4)@ha
10692 * addis 11,11,(-res_0)@ha
10693 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10694 * addi 11,11,(-res_0)@l # r11 = index * 4
10697 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10698 * add 11,0,11 # r11 = index * 12 = reloc offset.
10701 static const unsigned int plt_resolve[] =
10721 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10723 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
10726 /* Build the branch table, one for each plt entry (less one),
10727 and perhaps some padding. */
10728 p = htab->glink->contents;
10729 p += htab->glink_pltresolve;
10730 endp = htab->glink->contents;
10731 endp += htab->glink->size - GLINK_PLTRESOLVE;
10732 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10734 bfd_put_32 (output_bfd, B + endp - p, p);
10739 bfd_put_32 (output_bfd, NOP, p);
10743 res0 = (htab->glink_pltresolve
10744 + htab->glink->output_section->vma
10745 + htab->glink->output_offset);
10747 if (htab->params->ppc476_workaround)
10749 /* Ensure that a call stub at the end of a page doesn't
10750 result in prefetch over the end of the page into the
10751 glink branch table. */
10752 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10754 bfd_vma glink_start = (htab->glink->output_section->vma
10755 + htab->glink->output_offset);
10757 for (page_addr = res0 & -pagesize;
10758 page_addr > glink_start;
10759 page_addr -= pagesize)
10761 /* We have a plt call stub that may need fixing. */
10765 loc = htab->glink->contents + page_addr - 4 - glink_start;
10766 insn = bfd_get_32 (output_bfd, loc);
10769 /* By alignment, we know that there must be at least
10770 one other call stub before this one. */
10771 insn = bfd_get_32 (output_bfd, loc - 16);
10773 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10775 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10780 /* Last comes the PLTresolve stub. */
10781 if (bfd_link_pic (info))
10785 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
10787 unsigned int insn = pic_plt_resolve[i];
10789 if (htab->params->ppc476_workaround && insn == NOP)
10791 bfd_put_32 (output_bfd, insn, p);
10794 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10796 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10797 + htab->glink->output_section->vma
10798 + htab->glink->output_offset);
10800 bfd_put_32 (output_bfd,
10801 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10802 bfd_put_32 (output_bfd,
10803 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10804 bfd_put_32 (output_bfd,
10805 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10806 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10808 bfd_put_32 (output_bfd,
10809 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10810 bfd_put_32 (output_bfd,
10811 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10815 bfd_put_32 (output_bfd,
10816 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10817 bfd_put_32 (output_bfd,
10818 LWZ_12_12 + 4, p + 9*4);
10823 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
10825 unsigned int insn = plt_resolve[i];
10827 if (htab->params->ppc476_workaround && insn == NOP)
10829 bfd_put_32 (output_bfd, insn, p);
10832 p -= 4 * ARRAY_SIZE (plt_resolve);
10834 bfd_put_32 (output_bfd,
10835 LIS_12 + PPC_HA (got + 4), p + 0*4);
10836 bfd_put_32 (output_bfd,
10837 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10838 bfd_put_32 (output_bfd,
10839 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10840 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10842 bfd_put_32 (output_bfd,
10843 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10844 bfd_put_32 (output_bfd,
10845 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10849 bfd_put_32 (output_bfd,
10850 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10851 bfd_put_32 (output_bfd,
10852 LWZ_12_12 + 4, p + 6*4);
10857 if (htab->glink_eh_frame != NULL
10858 && htab->glink_eh_frame->contents != NULL)
10860 unsigned char *p = htab->glink_eh_frame->contents;
10863 p += sizeof (glink_eh_frame_cie);
10868 /* Offset to .glink. */
10869 val = (htab->glink->output_section->vma
10870 + htab->glink->output_offset);
10871 val -= (htab->glink_eh_frame->output_section->vma
10872 + htab->glink_eh_frame->output_offset);
10873 val -= p - htab->glink_eh_frame->contents;
10874 bfd_put_32 (htab->elf.dynobj, val, p);
10876 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10877 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10878 htab->glink_eh_frame,
10879 htab->glink_eh_frame->contents))
10886 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10887 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10888 #define TARGET_BIG_SYM powerpc_elf32_vec
10889 #define TARGET_BIG_NAME "elf32-powerpc"
10890 #define ELF_ARCH bfd_arch_powerpc
10891 #define ELF_TARGET_ID PPC32_ELF_DATA
10892 #define ELF_MACHINE_CODE EM_PPC
10893 #ifdef __QNXTARGET__
10894 #define ELF_MAXPAGESIZE 0x1000
10895 #define ELF_COMMONPAGESIZE 0x1000
10897 #define ELF_MAXPAGESIZE 0x10000
10898 #define ELF_COMMONPAGESIZE 0x10000
10900 #define ELF_MINPAGESIZE 0x1000
10901 #define elf_info_to_howto ppc_elf_info_to_howto
10903 #ifdef EM_CYGNUS_POWERPC
10904 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10908 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10911 #define elf_backend_plt_not_loaded 1
10912 #define elf_backend_want_dynrelro 1
10913 #define elf_backend_can_gc_sections 1
10914 #define elf_backend_can_refcount 1
10915 #define elf_backend_rela_normal 1
10916 #define elf_backend_caches_rawsize 1
10918 #define bfd_elf32_mkobject ppc_elf_mkobject
10919 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10920 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10921 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10922 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10923 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10924 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10925 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10927 #define elf_backend_object_p ppc_elf_object_p
10928 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10929 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10930 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10931 #define elf_backend_relocate_section ppc_elf_relocate_section
10932 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10933 #define elf_backend_check_relocs ppc_elf_check_relocs
10934 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10935 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10936 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10937 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10938 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10939 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10940 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10941 #define elf_backend_fake_sections ppc_elf_fake_sections
10942 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10943 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10944 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10945 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10946 #define elf_backend_write_core_note ppc_elf_write_core_note
10947 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10948 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10949 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10950 #define elf_backend_write_section ppc_elf_write_section
10951 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10952 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10953 #define elf_backend_action_discarded ppc_elf_action_discarded
10954 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10955 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10957 #include "elf32-target.h"
10959 /* FreeBSD Target */
10961 #undef TARGET_LITTLE_SYM
10962 #undef TARGET_LITTLE_NAME
10964 #undef TARGET_BIG_SYM
10965 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10966 #undef TARGET_BIG_NAME
10967 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10970 #define ELF_OSABI ELFOSABI_FREEBSD
10973 #define elf32_bed elf32_powerpc_fbsd_bed
10975 #include "elf32-target.h"
10977 /* VxWorks Target */
10979 #undef TARGET_LITTLE_SYM
10980 #undef TARGET_LITTLE_NAME
10982 #undef TARGET_BIG_SYM
10983 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10984 #undef TARGET_BIG_NAME
10985 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10989 /* VxWorks uses the elf default section flags for .plt. */
10990 static const struct bfd_elf_special_section *
10991 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd, asection *sec)
10993 if (sec->name == NULL)
10996 if (strcmp (sec->name, ".plt") == 0)
10997 return _bfd_elf_get_sec_type_attr (abfd, sec);
10999 return ppc_elf_get_sec_type_attr (abfd, sec);
11002 /* Like ppc_elf_link_hash_table_create, but overrides
11003 appropriately for VxWorks. */
11004 static struct bfd_link_hash_table *
11005 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
11007 struct bfd_link_hash_table *ret;
11009 ret = ppc_elf_link_hash_table_create (abfd);
11012 struct ppc_elf_link_hash_table *htab
11013 = (struct ppc_elf_link_hash_table *)ret;
11014 htab->is_vxworks = 1;
11015 htab->plt_type = PLT_VXWORKS;
11016 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
11017 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
11018 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
11023 /* Tweak magic VxWorks symbols as they are loaded. */
11025 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
11026 struct bfd_link_info *info,
11027 Elf_Internal_Sym *sym,
11028 const char **namep,
11033 if (!elf_vxworks_add_symbol_hook (abfd, info, sym, namep, flagsp, secp,
11037 return ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp);
11041 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
11043 ppc_elf_final_write_processing (abfd, linker);
11044 elf_vxworks_final_write_processing (abfd, linker);
11047 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
11049 #undef elf_backend_want_plt_sym
11050 #define elf_backend_want_plt_sym 1
11051 #undef elf_backend_want_got_plt
11052 #define elf_backend_want_got_plt 1
11053 #undef elf_backend_got_symbol_offset
11054 #define elf_backend_got_symbol_offset 0
11055 #undef elf_backend_plt_not_loaded
11056 #define elf_backend_plt_not_loaded 0
11057 #undef elf_backend_plt_readonly
11058 #define elf_backend_plt_readonly 1
11059 #undef elf_backend_got_header_size
11060 #define elf_backend_got_header_size 12
11061 #undef elf_backend_dtrel_excludes_plt
11062 #define elf_backend_dtrel_excludes_plt 1
11064 #undef bfd_elf32_get_synthetic_symtab
11066 #undef bfd_elf32_bfd_link_hash_table_create
11067 #define bfd_elf32_bfd_link_hash_table_create \
11068 ppc_elf_vxworks_link_hash_table_create
11069 #undef elf_backend_add_symbol_hook
11070 #define elf_backend_add_symbol_hook \
11071 ppc_elf_vxworks_add_symbol_hook
11072 #undef elf_backend_link_output_symbol_hook
11073 #define elf_backend_link_output_symbol_hook \
11074 elf_vxworks_link_output_symbol_hook
11075 #undef elf_backend_final_write_processing
11076 #define elf_backend_final_write_processing \
11077 ppc_elf_vxworks_final_write_processing
11078 #undef elf_backend_get_sec_type_attr
11079 #define elf_backend_get_sec_type_attr \
11080 ppc_elf_vxworks_get_sec_type_attr
11081 #undef elf_backend_emit_relocs
11082 #define elf_backend_emit_relocs \
11083 elf_vxworks_emit_relocs
11086 #define elf32_bed ppc_elf_vxworks_bed
11087 #undef elf_backend_post_process_headers
11089 #include "elf32-target.h"